Troy-Bilt 21A-634B063 User manual

Brand: Troy-Bilt

Model: 21A-634B063

Category: Mini tillers

Type: User manual

O TRO_ BILT

Operator's Manual

Rear-tine Tiller Models

630C Tuffy_

634Fm BroncoTM

634Bm Super BroncoTM

Model 634B Shown

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

WARNING: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-

covered, brush-covered or grass-covered land unless the engine's exhaust system is equipped with a spark arrester meeting applicable

local or state laws (if any). If a spark arrester is used, it should be maintained in effective working order by the operator. In the State of

California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have similar laws.

Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized service dealer or

contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.

TROY-BILT LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

PRINTEDIN U.S.A. FORM NO. 770-10594C

11/25/02

TABLEOFCONTENTS

Content Page

CallingCustomerSupport.......................................................................................................2

Safety......................................................................................................................................3

Assembly................................................................................................................................6

Freaturesand Controls............................................................................................................lg

Operation................................................................................................................................12

Maintenance...........................................................................................................................17

Off-SeasonStorage.................................................................................................................21

Troubleshooting......................................................................................................................22

Parts List ................................................................................................................................23

WarrantyInformation..............................................................................................................BackCover

FINDINGMODELNUMBER

This Operator'sManualisanimportant partof your newRear-tineTiller. It will helpyouassemble, prepareandmaintain the unitfor

best performance. Pleasereadand understandwhat it says.

Beforeyoustartassemblingyournewequipment,pleaselocatethe modelplateon theequipment andcopy the

information from itinthespace providedbelow.This information isvery importantif you needhelpfrom our Customer

Support Departmentor an authorizeddealer.

You canlocatethe model numberby lookingon the rearsurfaceof thetine shield.A sample model plateisexplainedbelow.For

future reference,pleasecopy the modelnumber andtheserial numberof theequipment inthe spacebelow.

O TRII_BILT • _."__-_ _. _

www.troybilt.com CLEVELAND,OH44136

330-558-7220

• 866-840-648_

Copythe modelnumberhere:

Copythe serial numberhere:

ENGINEINFORMATION

Theengine manufacturer is responsiblefor all engine-relatedissueswith regardto performance,power-rating, specifications,

warrantyand service. Pleasereferto the enginemanufacturer's Owner's/Operator'sManualpackedseparatelywith your unitfor more

information.

CALLINGCUSTOMERSUPPORT

If you havedifficulty assemblingthis product or haveanyquestionsregarding thecontrols, operationor maintenanceofthis unit,

pleasecallthe CustomerSupport Department.

Call1- (330) 558-7228 or 1- (866) 848-6483 to reacha Customer Support representative.Pleasehaveyour unit's

model numberandserial number readywhenyou call. Seeprevioussection to locatethis information. You will be

askedto enterthe serial

SECTION1: SAFETY

Thismachinemeetsvoluntarysafetystan-

dardB71.8-1996, whichissponsoredbythe

OutdoorPowerEquipmentInstitute,Inc.,

andis publishedbythe AmericanNational

StandardsInstitute.

WARNING

The engine exhaust from this productcontains

chemicals known to the State ofCalifornia to

cause cancer, birth defects or other reproduc-

SafetyAlertSymbol

This is a safety alert symbol. It is used

in this manual and on the unit to alert

you to potential hazards. When you

see this symbol, read and obey the

message that follows it. Failu re to obey

safety messages could result in

persona t injury or property damage.

ForwardClutchB_

ReverseClutchControl

(Models634F/634B)

DepthRegulator

TineHoodFlap

(SRT)

Figure1-1: Tillerfeaturesandcontrols.SeeseparateEngineOwner'sManualto

identifyenginecontrols.

Training

1. Carefullyreadthis Own-

er's Manual.the separate

EngineOwner'sManual

andany other literature you may receive.

Bethoroughly familiar with the controls

andthe proper use ofthe tiller and its en-

3. Donot operatethetiller without wearing

adequateoutergarments. Avoid loosegar-

ments or jewelry that could getcaught in

moving parts.

4. Do not operatethe tiller when barefoot

or wearingsandals,sneakers,or light foot-

wear.Wearprotective footwear that wi

gine.Know howto stop the unitand dlsen- improvefooting on slippery surfaces.

gagethe controls quickly.

2. Neverallow childrento operatethetiller.

Neverallow adults to operatethe tiller

without proper instruction.

3. Keepthearea of operation clearof all

persons,particularly children and pets

4. Keepin mindthat theoperatoror useris

responsiblefor accidents or hazardsoc-

curring to other people,their property,and

themselves.

Preparation

1.Thoroughly inspectthe area wherethe

tiller isto be usedand removeall foreign

objects.

2. Be sure all tiller controls are released

andboth wheelsare in theWheelDrive po-

sition beforestarting the engine.

e. Replaceall fuel tank and container

caps securely.

f. If fuel is spilled, do not attempt to

start the engine,but movethe ma-

chine awayfrom the areaof sp_llage

and avoidcreating any source of ig-

lit{on until fuel vapors havedissi-

pated.

5. Donottill near underground electricca- 7. Nevermakeadjustmentswhenengine_s

bles. telephonelines, pipes or hoses.If in running {unless recommended oy manu-

doubt contact your telephoneor utility facturer).

company.

6. Warning: Handlefuel with care: itis Operation

highly flammableand its vaporsare explo-

sive.Takethe following precautions:

a. Storefuel in containersspecifically

desLgnedfor this 3urpose.

I]. Thegascapshallneverberemovedor

fueladdedwhiletheengineisrunning.

Allow theengineto coolfor several

m_nutesbeforeaddingfuel.

#. Keepmatches,cigarettes,cigars,

ptpes,openflames and sparksaway

from the fueltank and fuel container.

d. Fillfuel tank outdoorswith extreme

care.Neverfill fueltank indoors. Use

a funnel or spou[ to preventspillage.

1. Do not put hands or feet near or under

rotating parts

2. Exerciseextremecautionwhen on or

crossing gravel drives,walks, or roads.

Stayalertfor hidden hazardsortraffic. Do

not carry passengers.

3.Nter striking a foreign object, stop the

engine,removethe wire from the spark

plug wire and preventitfrom touching the

spark plug. Thoroughly inspectthe ma-

chinefor any damageand repairthe dam-

agebefore restarting and operatingthe

machine.

4. Exercisecautionto avoid slippingor fall- If indoubtaboutthetilling conditions,al- 24. Donot touch engine parts which may

ing.

5. If the unit should start to vibrate aonor-

really,stop the engine,disconnect the

spark plug wire and prevent itfrom touch-

ing the spark plug,and checkimmediately

for the cause. Vibration is generallya

warning of trouble.

6. Stopthe eng he.disconnectthe spark

plugwire and prevent itfrom touching the

spark plug, whenever you leavethe oper-

atingposition, beforeuncloggingthetines.

or whenmaking any repairs, adjustments

or inspections.

7. Takeall possible precautionswhen leav-

ing the machine unattended. Stopthe en-

gine. Disconnectthe spark plug wire and

move itawayfrom thespark plug. Besure

that both wheelsare intheWheelDrive po-

sition.

8. Beforecleaning, repairing, or inspect-

ing, stop the engine and makecertain all

mowng parts havestopped. Disconnect

thespark plug wire and prevent itfrom

touching the spark plug to preventacci-

dentalstarting.

9. Theflapon thetine hood must bedown

when operatingthetiller.

tO. Neverusethetiller unless proper

guards, plates,or other safety protective

devicesare in place.

11. Donot run the engine man enclosed

area. Engineexhaustcontains careen

monoxide gas. a deadlypoison that is

odorless, colorless, and tasteless.

12. Keepchildren and petsaway.

waysusethe followingoperatingprecau- behotfrom operation. Letparts cooldown

tionsto assistyou inmaintainingcontrol sufficiently.

ofthe tiller: 25. Pleaseremember:Youcanalwaysstop

a. Walk behindandto oneside ofthe thetines andwheels by releasingthe For-

tiller, usingonehandonthe handle ward Clutch Bailor on Models 634Fand

barsRelax your arm, butusea 634Bthe ReverseClutchcontrol. _which-

securehandgrip.

b. Useshallowerdepthregulator

settings,workinggraduallydeeper

with eachpass.

c. Useslowerenginespeeds.

d. Clearthetilling area ofall large

stones,rootsorotherdebris.

e. Avoidusingdownwardpressureon

thehandlebars.If needbe, use

slightupwardpressureto keepthe

tines from diggingtoodeeply.

f. Beforecontactinghardpackedsoil

at theend ofa row.reduceengine

speedandlift thehandlebarsto

raise thetines outofthesoil.

evercontrol isengaged),or by movingthe

_gnitionswitch and/orthrottle control lever

on the engineto "OFF"or "STOP".

26. To load or unloadthe tiller, seethe in-

structions in Section4 of this Manual.

27. Useextremecaution when reversing

or pulling the machinetowards you.

28. Start the enginecarefullyaccording to

instructionsand with feetwell awayfrom

thetines.

29. Neverpickupor carry amachinewhile

theengine isrunning.

MaintenanceandStorage

g. Inanemergency,stopthetinesand

wheels byreleasingwhichever

clutchcontrolis engaged.Do not

attemptto restrainthetiller.

15. Donot overloadthe tiller's capacity Dy

attempting to till too deeplyattoo fast a

rate

16. Neveroperatethe tiller at high trans-

port speeds on hard or slippery surfaces.

Look behindand usecarewhen backing

17. Do notoperatethetiller ona slopethai

is too steepfor safety.When on slopes,

slow down and makesure you havegood

footing. Never permit the tiller to free-

1. Keepthe tiller, attachmentsand acces-

sories in safeworking condition.

2. Checkall nuts bolts, and screws at

ervalsfor proper t_ghtnessto be surethe

equipment is insafeworking condition.

3. Neverstore thetiller with fuel in thefuel

tank insidea building whereignition sourc-

esare presentsuchashotwater andspace

heaters,furnaces, clothesdryers, stoves,

electric motors, etc.L Allow the engineto

cool neforestoring the unit in an'yenclo-

sure.

4. To reducethe chancesof a fire hazard.

keeptheenginefree ofgrass, leaves,or ex-

cessivegrease.

13.Neveroperatethetiller underengine wheeldown slopes.

powerifthewheels arein theFreewheel

position.Inthe Freewheelposition, the

wheelswill not hold the tiller backand the

revolving Linescould propelthetiller rapid-

ly,possibly causingloss ofcontrol. Always

engagethe wheels with the wheeldrive

pins in the WheelDrive position before

starting the engineor engagingthe

tines/wheelswith the Forward ClutchBail

(all models_or the ReverseClutchcontrol

(Models 634F/634Bonly}.

14. Beawarethatthetiller may unex-

pectedlybounceupwardorjumpforward

if thetines shouldstrike extremelyhard

packedsoil, frozenground,or buriedob-

stacleslike largestones,roots,or

stumps.

18. Neverallow bystanders nearthe umt.

19. Onlyuseattachments andaccessories

that are approvedby the manufacturer o1

the tiller.

20. Usetiller attachmentsand accessories

when recommended.

21. Neveroperatethe tiller without good

wsibility orlight.

22. Neveroperatethe tiller ifyou aretired:

or underthe influence ofalcohol, drugs or

medication.

23. Operatorsshallnottamper with the en-

gine-governor settings onthe machine:

5. Storegasolinein a cool. well-ventilated

area,safelyaway from any spark- or

flame-producing equLpment. Storegaso-

line in an approvedcontainer,safelyaway

from the reachof children.

6. Refedto the Maintenancesections of

this Manualand the separateEngineOwn-

er'sManualfor instructions ifthe unit isto

be stored for an extendedperiod.

7. Neverperform maintenancewhilethe

engineis runmng orthe spark plug wire is

connected,exceptwhen specificahyin-

structed to do so.

8. Ifthefueltankhastobedrained dothis

outdoors.

the governor controls the maximum safe

operatingspeedto protectthe engine and

all moving parts from damagecaused by

overspeed. Authorized serviceshall be

sought if a problem exists.

Decals

Foryour safety and the safety of others, vari-

ous safetyand operationaldecalsare located

on your unit (seeFigure1-2)t

Keepthe decalscleanand legibleat all times.

Contactyour localservicedealerorthefactory

for replacementsifanydecalsare damagedor

missing.

Referto the PartsList pagesinthis Manualfor

decallocations, descriptions and part num-

bers.

ForwardClutchBail

StartingStabilization

Message(onengine)

ReverseClutchControl

OperatingInstruction

(Models634F/634B)

WarningMessages

HotSurfacesWarning

Figure1-2: Locationofsafetyandoperatingdecals.

OperatingSymbols

w_s _bo_ (shownr_re,_ _crd_)

maybeusedonthellera_lmgine.

NOTEYour_mayr_thavealiof_s_.

I-'-I Itl R

CHOKE CHOKE REVERSE

ON OFF ROTATINGTINES

FAST SLOW

<--o-->

STOP TILLERDIRECTION LEVERDIRECTION

BAIL BAIL

ENGAGED DISENGAGED

TO AVOID SERIOUS INJURY:

• READTHEOWNER'SMANUAL.

• KNOWLOCATIONSAND FUNCTIONSOFALLCONTROLS.

• KEEPALLSAFETYDEVICESANDSHIELDSIN PLACEAND WORKING.

• NEVERALLOWCHILDRENORUNINSTRUCTEDADULTSTO OPERATETILLER.

• SHUTOFFENGINEANDDISCONNECTSPARKPLUGWIREBEFOREMANUALLYUN"

CLOGGINGTINESORMAKINGREPAIRS.

• KEEPBYSTANDERSAWAYFROMMACHINE.

• KEEPAWAYFROMROTATINGPARTS.

• USEEXTREMECAUTIONWHEN REVERSINGOR PULLINGTHEMACHINETOWARDS

YOU.

SECTION2: ASSEMBLY

WARNING: To prevent

personalinjury or property

damage,do notstarttheengine

until all assemblysteps are

completeandyou haveread

and understandthe safety and

operatinginstructions in this

manual.

INTRODUCTION

Carefullyfollow these assemblysteps to

correctly prepareyour tiller for use. It is

recommendedthat you readthis Section

in its entirety beforebeginning assembly.

NOTE: Various tiller models are

ASSEMBLYSTEPS

STEP 1: UNPACKINGINSTRUCTIONS

NOTE:While unpacking, do not severely

bendany control cables.

1.Thetiller weighs approximately133 lbs.

Donot attempt to remove it from the ship-

ping platform until instructed to do so m

these Assembly steps.

2. Removeanypackagingmaterialfrom

the carton. Removeany staplesfrom the

bottom ofthe carton and removethe car-

ton from the shipping platform.

3. Removeall unassembledpartsand the

separatehardwarebagfrom the carton.

presented in this Manual Use only the Checkthat you havethe items listedinthe

information appropriate for your tiller LoosePartsList(contactyour localdealer

model Engine styles vary by model Your or the factory itemsare missing or dam-

engine may appear differently than those aged).

illustratedin this manual.

INSPECTUNIT

Inspectthe unitand carton for damageLm-

mediatelyafter delivery. Contactthe cam-

er (trucking company) if you find or

suspectdamage. Inform them of thedam-

ageand request instructions for filing a 1

claim. Toprotect your rights, put your

claim inwriting and ma_la copyto the car- 1

rier within 15 days after the unit hasbeen 1

delive'ed. ContactTroy-Bilt LLCil you 6

needassistancein this matter. 2

TOOLSMATERIALSNEEDED

NOTE: Use the screw length template

(Fig.2-1) toidentify screws

LoosePartsList

Qty. Description

HandlebarSupport (seeA, Fig. 2-2_

HandlebarAssembly(seeK,Fig.2-2)

Hardwarebag contents:

Slotted hd. screw #10-24 x 2'

Hex hd.screw 1/4-20 x 1-1 '4

Hex hd.screw 5/16-18 x 1-1 2"

Hex hd.screw. 3/8-16 x 3/4

FlatWasher.3/8

6 Split Iockwashe_5/16"

Figure2-1: Toidentifylengthofscrews,place

screwontemplateasshownandmeasuredis-

tancebetweenbottomofscrewheadandtipof

scrBw,

STEP 2: ATTACH HANDLEBAR

1. Looselyattachthe legsofthe handlebar

support (A, Fig.2-2) to the inner sides of

thetiller frame usingtwo 3/8"-16x 3/4"hex

hd. screws (B), 3/8"flat washers(C),3/8"

lock washers (GG_,and 3/8"-16 hexlock-

nuts (D_,

2. Therearethree heightadjustment holes

in the two handlebarsupport brackets (.E

and E Fig. 2-2). Usea setting that will po-

sition the handlebarsat approximately

waist levelwhenthetines are3"-4"intothe

so_l. Looselyattachthe support brackets

to the handlebarsupport (.A_using two

1 HexIocknut. 1/4"-20 5Pi6"-18x 1-1/2" screws (G).5/16" split

Ill 3,8" open-endwrench* 6 Hexnut. 5/16"-18 Iockwashers(.H)and5/16"-18 hexnuts (I).

(.2) 7/16'open-end wrench" 1 Hexnut #10-24 NOTE: If a support bracketwill not move

12_ 1/2" open-end wrench* 2 HexIocknut.3,8"-16 loosenattaching screw (J) and nut.

(2) 946" open-end wrench* 1 Spring, cable(seeW,Fig.2-5_ 3. Attach the handlebarassembly (.K_to

1 Bracket.forward clutchcable the handlebarsupport (A) usingfour 5.

(1) Largead Jstablewrench (.seeP,Fig.2-4_ 16"-18x 1-1/2" screws (.G_,5/16" split

_Models634F/634Bonly} 2 Lockwasher 3/8

(.1J Scissors to trim plasticties/

(1) Ruler (for belttension check_

111 Block of wood (to support tiller when

remowng wheels)

111 Tire pressure gauge(for modelswith

pneumatictires_

Ill Cleanoil funnel

111 Motor oil Refertothe Engine0wner's

Manualfor oil specificationsand

quantityrequired.

* Adjustablewrenches may Deused,

1 *Bracket reverseclutch cable

*Model 634F& 634B only

IMPORTANT:Motor oil must beaddedto

the enginecrankcase beforetheengine is

started. Followthe instructions inthis

Sectionand in theseparateEngine

Owner'sManual.

*Self-tappingscrew. 1/4-20 x 1/2" IockwashersIHI and5/16"-18 hexnuts (I).

Tightenthe four screws securely

4. Tighten all handlebar mounting hard-

waresecurely.

STEP3: MOVE TILLER OFF

Toroll thetiller off the shipping platform.

put the wheels in freewhee asfollows:

1. Placea sturdy block underthetransmis-

NOTE: LEFTandRIGHTsidesofthetiller sion to raise one wheelabout l" offthe

are as viewedfrom the operator's position ground.

behind thehandlebars.

Fig. 2-3: Wheelin FREEWHEELposition

STEP4: INSTALL FORWARD

CLUTCH CABLE

1. Attach theforward clutch cablebracket

(P,Fig.2-4) to the handlebarsupport AI

with a 1/4"-20x 1-1/42hexhd. screw (R)

and V4"-20 hexIocknut (S). Tightense-

curely.

2. Carefullyunwrapthe forward clutch ca-

ble (cablewithout anattachedknob, from

its shipping position and slidethe thin ca-

ble wire (T.Fig.2-4 intothe slot in the ca-

ble bracket. Pushthe cableconnector (U.

Fig.2-4) upthrough the holein thebracket

until the groove in the connector snaps

into place.

3. Insertthe #10-24 x 2"slotted hd.screw

(V,Fig.2-5) downthrough the hookedend

of the cablespring (W) until the screw

Fig.2,2:AHachhandlebar, threads extendthrough the spring.

2. Removethe hairpin cotter (L, Fig.2-3)

and wheeldrive pin (M) from the wheel

hub (0) and wheel shaft (N).

3. Slidethe wheelfully inwardonthewheel

shaft (N, Fig.2-3). Reinstallthe wheel

drive pin (M) through the wheelshaft only

(not through thewheel hub). Securethe

wheeldrive pin with the hairpin cotter (L),

pushingthe hairpincotter in asfar asit will

go. Thewheel should now spin freely

(freewheel) on the wheelshaft. Repeat

with the other wheel.

4. Usethe handlebarto roll the tiller to a

flat area.

IMPORTANT:Beforestarting theengine,

thewheels must be placedin theWHEEL Fig.2=4:Installingforwardclutchcablebracketandcable.

DRIVEposition (pins through wheelhubs

andwheelshaft). This procedureis

described in WheelDrive Pinsin Section3.

4. Threadthe #10-24 hexnut (Z, Fig. 2-5)

halfwayonto the screw (V).

5. Threadthe screw IV_into thecable ad-

juster (X).

6. Hookthecablespring (W, Fig.2-6) into

theV-shaoedbend in the ForwardClutch

Bail _Y).

7. Checkfor correcttension ontheforward

drive belt bytaking two measurementsof

thecablespnng, asfollows:

a. With the ForwardClutch Bail (Y,Fig.2-

6/in an open(released)position, measure

thelength ofthecablespring (W from the

outermost coil to the outermost coil.

n. SqueezetheForwardClutchBailagainst

the handlebar(seeFig. 2-7_and re-mea-

surethe spring length, Thebelt tension is

correct if this secondmeasurementis be-

tween 1/16"to 3/16"longer than thefirst

measurement. If so.turn the hexnut (Z.

Fig.2-7) tightly against the cableadjuster

(X_while preventingthe cableadjuster

from turnmg.

c. If the spring length is incorrect, you

mustadjust the cabletension asdescribed

Fig.2-7: Tocheckforwardbelttension,taketwomeasurementsofthelengthofthecoilsinthe

spring-- firstwiththebailopen,thenwiththebailheldagainstthehandlebar.

STEP 5: INSTALL REVERSE CLUTCH

CABLE (MODELS 634F & 634B ONLY)

1. Unwrapthe reverseclutch cable(CC.

Fig.2-8 and Fig.2-9_from its shipping po-

sition and route it up to the handlebar. Be

surethat the cableis routed beneaththe

in Checkingand Adjustin_ Forward Drive ForwardClutchBail.

Belt Tensionin Section 5. Incorrect cable

tension can result in belt slippage Icable

tension too IooseL or unintentional tine

movement whenthe clutch bail is in Neu-

tral Icable tension too tight}

2. Usingthe two self-tapping screws (AA,

Fig.2-8) securethe reversecable mount-

ing bracket(BB)tothe handlebars,as

show_

3. Insertthe cable(CC,Fig.2-8) throughthe

slot inthecablebracketandpositiontheflat

sideofthe threadedassemblynextto the

flat sideofthe hole. Slidethe hexnut (DD/

up thecableandtighten it securely

4. Fastenthe reverseclutch cableto the

left sidehandlebarwith a cabletie (EE,Fig.

2-9L

5. Testthefunction ofthe reverseclutch by

pulling out and releasingthe cableknob.

Theknob should return to its neutral posi-

tion (resting against bracketL If it doesn't.

contact your localdealer or Troy-Bilt LLC

for technical assistance.

X--

Flat Side

Fig. 2-8: Install reverse cable bracketand

reverseclutchcable,

Fig, 2-5: Cable

springand

adjuster.

Fig. 2-6: Attachforward

clutch cablespringto

forwardclutchbail.

Fig.2-9:Routereverseclutchcable(CC)as

shown.Attachwithcabletie(EL:).

31bY I_: L;I'IEL;KLEVEL UI-

Thetransmission wasfilled with gearoil at

thefactory.However,youshouldcheckthe

gearoil levelatthis time to makecertain it

is correct.

IMPORTANT:Donot operatethe tiller ifthe

gearoil levelis low. Doingso will result in

severedamageto thetransmission com-

ponents.

1. With the tiller on levelground, pull the

Depth RegulatorLever(FF,Fig.2-10) back

andthen all the way up until the lowest

notch in the lever isengaged.

2. Removethe oil fill plug (GG,Fig.2-11)

from the transmission housingcover and

locatethe maindrive shaft situated inside

the housing.

3. Thegear oil levelis correct ifthe gear

oil isapproximately halfwayup theside of

the maindrive shaft.

4. Ifthe oil levelis low,add gear oil byre-

ferring to A. ToCheckthe Transmission

GearOil Level in Section 5.

_IbY I: AUU MUIUH UIL

Thetiller isshipped withoutoil in theen-

gine.

IMPORTANT:Donotstart theengine with-

outfirst adding motor oil. Severeengine

damagewill result ifthe engineis run with-

out oil.

1. Referto the separateEngineOwner's

Manualfor engine oil specifications and

capacities.

2. With thetiller on levelground, movethe

Depth RegulatorLever(FF,Fig.2-10) up or

down until the engine is level.

3. Add motor oil asdescribed in the En-

gine Owner'sManual.

4. Movethe Depth RegulatorLeverallthe

way down until the highest notch is en-

gaged. This placesthetines in the"travel"

position, which allows the tiller to be

moved without thetines touching the

ground.

STEP8: CHECKHARDWARE

Checkall nuts and screws for tightness.

STEP 9: CHECKAIR PRESSURE IN

TIRES (units with pneumatic tires)

Ontires equipped with air valves, check

theair pressure with atire gauge. Deflate

or inflate the tires equallyto between15

PSIand20 PSI(pounds per squareinch).

Besure that both tires are inflated equally

orthe unit will pull to one side.

Fig. 2-10: AdjustDepthRegulatorLever.

IMrU. lANl: his compie[esme assemoiy steps.

Beforeoperatingyour tiller, makesure you readthe

following sections in this Manual,aswell as the

separateEngineOwner'sManual:

• Section 1: Safety

• Section 3: FeaturesandControls

• Section 4: Operation

Fig.2-11:Removegearoilfillplug,

SECTION3: FEATURESANDCONTROLS

WARNING: Before

operatingyour machine,

carefully readand understand

all safety,controls and

operatinginstructions in this

Manual,the separateEngine

Owner's Manual,andon the

decalson the machine.

Failureto follow these

instructions canresult in

serious personalinjury.

INTRODUCTION

This Section describesthe location and

function of thecontrols on your tiller. Re-

ferto thefollowing Section,Operationfor

detailedoperating instructions.

Practiceusing these controls, with the en-

gine shut off, until you understandthe op-

eration ofthe controls and feelconfident

with eachof them.

Forward

Reverse ClutchControl

(Models634F/634B)

DepthRegulator

Handlebar HeightAdjustment

Wheel Drive Pin

(oneachwheel)

ENGINE CONTROLS

Referto theengine manufacturer's Engine

Owner'sManual(included in the tiller liter-

ature package)to identify the controls on

your engine.

IMPORTANT:Thecontrol for stopping the

engine is located on the engine.

WHEEL DRIVE PINS

Eachwheelis equippedwith a wheeldrive

pin (A, Figures3-2 and 3-3) that secures

thewheelto the wheelshaft (B). The

wheelscan be positioned ineither a

WHEELDRIVEora FREEWHEELmode.

WARNING: Neverallow

eitherof thewheelsto bein the

FREEWHEELposition whenthe

engineis running. Alwaysput

both wheelsin theWHEEL

DRIVEposition beforestarting

theengine.

Failureto comply could cause

loss of tiller control, property

damage,or personalinjury.

Beforestarting theengine,put bothwheels

in the WHEELDRIVEposition byinserting

thewheel drive pins through the wheel

hubsand the wheel shaft. Doingso

"locks" the wheels to the wheelshaft,

causingthe wheelsto turn wheneitherthe

Figure3-1: Tillerfeaturesandcontrols.SeeseperateEngineOwner'sManualtoidentify

enginecontrols.

Forward ClutchBail (all models) or the Re-

verseClutch Control (Models 634Fand

634B) is engaged.

Usethe FREEWHEELmode only whenthe

engineis notrunning. In FREEWHEEL,the

wheeldrive pins are placedonly through

theholes in thewheelshaft (not the wheel

hubs), thus allowing the wheels to turn

freely whenyou manually movethe tiller.

Toplacethewheels in WHEELDRIVEot

FREEWHEEL:

1. Stopengine,disconnectsparkplugwire

from sparkplug andallowengineto cool.

WARNING: Donot place

tiller on its sidewhenchanging

wheeldrive positions. Doingso

could result in gasolineleaking

from thefuel tank.

Failuretofollow this instruction

could result in personal injury

or property damage.

2. Raiseonewheelabout one inch off the

ground and placeasturdy support under

thetransmission.

3. Removehairpincotter (C, Figures3-2

and 3-3) from wheel drive pin (A).

4. FORWHEELDRIVEMODE(Figure3-2):

Slide wheeloutward and align holes in

Figure3-2: WHEELDRIVE position.

wheelhub (D, Figure3-2) and wheel

shaft (B). Insert wheeldrive pin (A)

through wheel hub (D)and wheel

shaft (B). Securewheeldrive pin with hair-

pin cotter (C) by pushing hairpin cotter in

asfar as it will go. Repeatwith the other

wheeland then remove thesupport from

beneaththe transmission.

5. FORFREEWHEELMODE( Figure3-3):

Slidethe wheelinwardand insertthewheel

drive pin (A, Figure3-3) onlythrough the

hole in the wheel shaft (B). Securewheel

drive pinwith hairpincotter (C)bypushing

hairpin cotter in asfaras it will go. Repeat

for the other wheeland then remove the

support from beneaththe transmission.

Figure3-3: FREEWHEELposition.

,_ WARNING: Useextreme

caution whenreversing or

pulling the machinetowards

you. Look behindto avoid

obstacles.

Neverattempt totill in reverse.

Failureto follow this warning

could result in personal injury

or property damage.

Tooperatethe ReverseClutchControl:

1. Putwheels in WHEELDRIVEposition

(see"WARNING"statementat the left).

2. Stopall tiller motion by releasingthe

Forward ClutchBail.

_, WARNING: Beforestarting 3. Lift the handlebaruntil the tines clear

engine,besurethat both theground, look behind you to avoid any

wheelsare in WHEELDRIVE obstacles,and then pull the control knob

position. SeeWheslDrivePins (F,Figure3-4) out. The wheelsand tines

for instructions, will rotate in a reversedirection.

Engagingthe ForwardClutch 4. Releasethe control knob to disengage

Bail or ReverseClutchControl (stop)the wheelsand tines (theenginewill

(if equipped) whenthewheels continue to run).

arenot in WHEELDRIVEcould

allowthe tines to rapidly propel

thetiller forward or backward.

Failureto comply could cause

loss of tiller control, property

damage,or personalinjury.

FORWARDCLUTCHBAIL

ThForwardClutch Bail(E,Figure3-4) con-

trols the engagementofforward drive to

thewheelsand tines.

Tooperatethe ForwardClutchBail:

1. Put wheelsin WHEELDRIVEposition Figure3-4:AIImodelshaveaForwardClutch

(see"WARNING"statementabove). Bail (E). OnlyModels634F/g34Bhavea Re,

verseClutchControl(F).

2. Lift and hold theclutch bail (E,Figure3-

4)againstthehandlebartostartthewheels DEPTH REGULATOR LEVER

andtines rotating in a forward direction.

This lever (G,Figure3-5) controls the till-

3. Releasethe clutch bail to disengage ing depth of the tines. Pull the leverback

(stop) thewheelsandtines (theenginewill andslide it up or down to engagethe

continue to run). notched height settings.

REVERSECLUTCHCONTROL The"travel position" (highest notch) raises

(Models 634F/634B only) thetines approximately1-1/2"off the

ground,allowing the tiller to be moved

TheReverseClutchControl (F,Figure3-4) without the tines contactingthe ground.

controls the engagementof reverse drive This setting should also be usedwhen

to the wheelsand tines. The reversing starting the engine.

featureis usedfor maneuveringthe tiller

only-- neverengage the tines in the Moving the leverupward will increasethe

groundwhile operatingin reverse, tilling depth. Thelowest notch allowsa till-

ing depth of approximately 6", depending

on soilconditions. Forbestresults,always

begintilling atavery shallow depthsetting

and gradually increasethe tilling depth.

WARNING: Donotattempt

totill too deeplytoo quickly.

Graduallywork downto deeper

tilling depths.

Placethe DepthRegulator

Leverin the "travel" position

beforestartingthe engine. This

position preventsthetines from

touching the ground until you

arereadyto begintilling.

Failuretofollow this warning

could result in personalinjury

or property damage.

Figure3-5:DepthRegulatorLever(GJ.

HANDLEBAR HEIGHT ADJUSTMENT

Thehandlebar heightisadjustableto three

different settings (Figure3-6). In general,

adjust the handlebarssothey areat waist

levelwhenthe tines are 3"-4"in the soil.

Toadjustthe handlebars:

1. Stop engine,disconnect spark plug

wire from spark plug and allow engine to

cool.

2. Removehardware,reposition handle-

bars, and reinstall hardwaresecurely.

Figure3-6:Handlebarheightadjustment.

SECTION4: OPERATION

WARNING: Before ReverseClutchControl

operatingyour machine, (Models634F/634B)

carefully readand understand

all safety (Section 1),controls

(Section 3) and operating

instructions (Section 4) inthis

Manual,the separateEngine

Owner's Manual,andon the Clutch Bail

decalson the machine.

Failureto follow these

instructions canresult in

serious personalinjury.

INTRODUCTION

Readthis OperationSection and the sepa-

rate EngineOwner's Manualbeforeyou

start the engine. Then,takethe time to fa-

miliarize yourself with the basicoperation

of thetiller beforeusing it in the garden.

Findan open,levelareaand practiceusing

thetiller controls without thetines engag-

ing the soil (put tines in "travel" setting).

Onlyafter you've becomecompletely fa-

miliar with thetiller shouldyoubegin using

it in the garden.

BREAK-IN OPERATION

Perform the following maintenanceafter

thefirst two (2) hours of newoperation

(seeMaintenanceSection in this manual

and in the EngineOwner's Manual).

1. Changeengineoil.

2. Checkfor looseor missing hardwareon

unit. Tighten or replaceas needed.

3. Checktension on forward drive belt.

4. Checktransmission gear oil level.

STARTINGANDSTOPPING

Pre-StartChecklist

With the spark plug wire disconnected

from the spark plug,perform thefollowing

checksand services beforeeachuse:

1. Readthe Safetyand ControlsSections

in this manual. Readthe separateEngine

Owner'sManual providedwith the unit.

2. Putthewheels in theWHEELDRIVE

position (wheel pins must be through

holes in wheel hubsand wheel shaft).

3. Checkunit for loose or missing hard-

ware. Serviceas required.

4. Checkengine oil level. SeeEngine

Owner'sManual.

Fig, 4-1

5. Checkthat all safetyguardsand covers

are in place.

6. Checkair cleanerand enginecooling

system. SeeEngineOwner'sManual.

WARNING: GASOLINEIS

HIGHLYFLAMMABLEAND ITS

VAPORSAREEXPLOSIVE.

Follow gasolinesafety rules in

this Manual(seeSection1) and

in the separateEngineOwner's

Manual.

Failureto follow gasolinesafety

instructions can result in

serious personalinjury and

property damage.

7. Fillthefueltank with gasolineaccording

to the directions in theseparate Engine

Owner'sManual. Followall instructions

and safety rules carefully.

8. Attach spark plug wireto spark plug.

StartingtheEngine

Thefollowing steps describe how to start

and stop the engine.

WARNING: Donotattempt

to engagethetines or wheels

until you havereadall ofthe

operatinginstructions in this

Section. Also, reviewthesafety

rules in Section 1: Safety,and

the tiller and enginecontrols

information in Section3:

Featuresand Controls.

1. Completethe Pre-Start Checklist on

this page.

2. Putthe wheelsinthe WHEELDRIVEpo-

sition (seeWheeIDrivePinsinSection 3 of

this manual).

,_ WARNING: To help

prevent serious personalinjury

or damageto equipment:

• Beforestartingengine,potbothwheels

in the WHEELDRIVE position. Never

have wheels in FREEWHEELposition

when engine is running. When the

wheels are in FREEWHEEL,they do not

hold backthe tiller and the tines could

propelthetiller rapidly

ward orbackward.

• Before starting engine, pot Forward

Clutch Bail (all models) and Reverse

ClutchControl(Models 634F/634Bonly)

in neutral (disengaged) positionsby re-

leasing levers.

• Never run engine indoorsor in en-

closed, poorly ventilated areas. Engine

exhaust contains carbon monoxide, an

odorlessand deadlygas.

• Avoidenginemufflerandnearbyareas.

Temperaturesin theseareas mayexceed

150° F.

3. Movethe Depth RegulatorLeverall the

way down to the "travel" position, sothat

thetines clearthe ground.

4. Releaseall controls on thetiller.

5. On engine'swith a fuel shut-off valve,

turn valve to open position, as instructed

in the separateEngineOwner's Manual.

6. Putignition switch and/or throttle con-

trol leverlocated on engine in the "ON",

"RUN", "FAST"or "START"position, as in-

structed in the EngineOwner's Manual.

7. Chokeor prime engine,asinstructed in

EngineOwner'sManual.

8. Putone hand on fuel tank to stabilize

unit when pulling starter rope handle.

Thenuserecoil starter to start engine,as

instructed in the EngineOwner's Manual.

Whenenginestarts, graduallymove choke

lever (if so equipped) to "NOCHOKE",

"CHOKEOFF"or "RUN" position.

9. Usethe "FAST"throttle speedsetting

whentilling.

KEEPAWAYF_OMROTATING11NES.

ROTATING11NE$WILLCAUSEINJURY.

Stoppingthe EngineandTiller

1. Tostop thewheelsandtines, releasethe

ForwardClutch Bail(all models) or the Re-

verse ClutchControl (Models 634Fand

634B) -- whichevercontrol isin use.

2. Tostop theengine, putthe ignition

switch and/or thethrottle control leverin

the "OFF"or "STOP"position.

OPERATINGTHETILLER

Thefollowing operating instructionspro-

videguidelines to usingyour tiller effec-

tively and safely. Besureto read Tilling

Tips& Techniquesin this Section before

actually putting the tines into the soil.

NOTE:This is a traditional "Standard-Ro-

tating-Tine" (SRT)tiller with forward ro-

tating tines. It operatescompletely

differently from "Counter-Rotating-Tine"

(CRT)tillers or from front-tine tillers.

1. Followthe Pro-Start Checklist at the

beginning ofthis Section. Besurethat the

wheelsare in theWHEELDRIVEposition.

2. Movethe Depth RegulatorLeverallthe

way down, sothat thetines clearthe

ground. Usethis position whenpracticing

with thetiller and when traveling between

tilling sites. Beforeactuallytilling, move

the leverto the desireddepth setting (see

Tilling Tips & Techniques).

3. Start engine and allow itto warm up.

Thenput throttle in "FAST"setting.

4. For forward motion of the wheelsand

tines:

(a) Pull ForwardClutch Bail (Fig. 4-1) up

againsthandlebar. Releasebailto stop for-

ward motion of wheels and tines.

(b) Whentilling, relaxand letthe wheels

pull the unit while thetines dig. Walk be-

hindand a littleto onesideofthe unit. Use

one hand,yet keepalight--but secure--

grip on the handlebar(while keepingyour

arm loose). SeeFig.4-2. Let the unit

move at its own paceand do not push

down on the handlebarsto try and force

thetines todig deeper--this takesweight

off the wheels,reduces traction, and caus-

esthe tines to try and propel the tiller.

WARNING: Donot push

down onthe handlebarsto try

to makethetiller till more

deeply. This preventsthe

wheelsfrom holdingthetiller

backand canallow thetines to

rapidly propelthetiller forward,

which could result in loss of

control, property damage,or

personalinjury.

5. For reversemotion of the wheelsand

tines (Models 634F/634Bonly):

(a) Lookbehindand exercisecaution when

operating in reverse. Denottill while in

reverse.

(b) Stopall forward motion. Lift handle-

bar with one handuntil tines are off the

ground and then pull ReverseClutchCon-

trol knob out (seeFig.4-3). Tostop revers-

ing, let go of ReverseClutch Control knob.

(b) Swingthe handlebarto the left sothe

right wheeltakesa "step" backward.Next

swing the handlebarto the right so theleft

wheel"steps" backward.Repeatasneeded.

in reverse,shut off the engine,then place

thetwo wheelsin FREEWHEEL.

7. ToTurnthe TillerAround:

(a) Practiceturning thetiller in a level,

open area. Bevery carefulto keepyour

feetand legsawayfrom the tines.

(b) Tobeginaturn, liftthe handlebarsuntil

thetinesareoutofthegroundandtheengine

andtines are balancedoverthewheels(Fig.

4-4).

handlebarto steer in direction of turn (Fig.

4-5). After turning, slowly lowertines into

soil to resumetilling.

Fig.4-4: Tobeginturn,lift handlebarsuntil

tinesareoutofgroundandunitisbalanced.

Fig.4-5: Withtinesoutofground,pushhae-

dlebarssidewaystoturntiller.

Fig.4-3: Raisetinesoffgroundandlook StoppingtheTillerandEngine

behindwhenmovinginreverse. 1. Tostop thewheels and tines, release

6. To movethe Model630Cin reversefor

short distances:

(a) Releaseforward ClutchBail. Thenlift

Fig.4-2: Useonehandtoguidetiller when handlebaruntil tines areoff theground.

movingforward.

the ForwardClutchBail (all models) or the

ReverseClutchControl (Models 634Fand

634B) -- whichevercontrol is in use.

2. Tostop theengine, putthe ignition

switch and/orthethrottle control leverin

the "OFF"or "STOP"position.

TILLING TIPS& TECHNIQUES

TillingDepths

_=i, WARNING: Before

A _• tilling, Contactyour

,m ==== telephoneor utilities

companyand inquireif

underground equipment or

linesare usedon your

property.Donottill near

• Avoidpushingdownon thehandlebarsin anattemptto forcethetiller to dig deeper.Doing

sotakestheweightoff thepoweredwheels,causingthemto losetraction.Withoutthewheels

helpingto holdthetiller back,thetineswill attemptto propelthetiller- often causingthetiller

to skip rapidlyacrosstheground. (Sometimes,slight downwardpressureonthe handlebars

will helpgetthrougha particularlytough sectionof sodor unbrokenground,butin mostcases

this won't benecessarY.)

• Avoidtrying to digtoo deeplytoo quickly,especiallywhenbustingsodor whentilling soil

that hasn'tbeentilledfor sometime. Useshallowdepthregulatorsettings(onlyaninchortwo

deep)forthefirst passesthroughthesoil. Witheachsucceedingpass,diganotherinchortwo

buried electric cables, deeper.(Wateringtheareaafew daysprior totilling will maketilling easier,aswill lettingthe

telephone lines, pipesor newlyworkedsoil setfora dayortwo beforemakingafinal, deeptilling pass.)

hoses.

• Whencultivating(breakingupsurfacesoilaroundplantsto destroyweeds,seeFig.4-9),adjustthetinesto digonly 1"to 2"deep. Using

shallowtilling depthshelpspreventinjuryto plantswhoserootsoftengrow closeto thesurface. If needed,lift uponthehandlebarsslightly

to preventthetines from diggingtoo deeply. (Cultivatingon a regularbasisnotonlyeliminatesweeds,it alsoloosensandaeratesthe soil

for bettermoistureabsorptionand fasterplantgrowth.)

ChoosingCorrectWheel& Tine Speeds With experience,you will find the"just right" tillingdepthandtillingspeedcombination

that is bestfor yourgarden.

Settheenginethrottleleverataspeedtogivetheengineadequatepowerandyetallowitto operateattheslowestpossiblespeed...atleast

until you haveachievedthe maximumtilling depthyou desire.Fasterenginespeedsmaybedesirablewhenmakingfinal passesthrough

theseedbedor whencultivating.Selectionofthecorrectenginespeed,in relationto thetilling depth,will ensureasufficientpowerlevelto

dothejobwithout causingtheengineto labor.

Let theTiller Dothe Work

Whiletilling, relaxandletthewheelspullthe

tiller along while the tines do the digging.

Walkonthe sidethat is notyet finished(to

avoidmakingfootprints in thefreshlytilled

soil) and lightly, butsecurelygrip the han-

dlebarwith justonehand,

AvoidMakingFootprints

Wheneverpossible, walk on the untilled

sideofthe unitto avoidmakingfootprints in

your freshlytilled or cultivatedsoil. Foot-

prints causesoil compactionthat canham-

per root penetration and contributeto soil

erosion. They can also !'plant" unwanted

weed seeds back into the freshly tilled

ground.

AvoidTillingSoggy,WetSoil

Tillingwet soil often resultsin large,hard

clumpsof soil that caninterferewith plant-

ing.If time permits, wait a dayor two after

heavyrainsto allowthe soil to dry before

tilling. Testsoil bysqueezingit intoaball.If

itcompressestoo easily,it istoo wetto till.

PreparingSeedbeds

• Whenpreparinga seedbed,go overthe samepathtwice in the first row,then

overlapone-halfthetiller width on therest ofthe passes(seeFig.6). Whenfin-

ishedin onedirection, makea secondpassat a rightangle,asshown in Fig.4-7.

Overlapeachpassfor best results(in very hardground,it maytakethreeor four

passesto thoroughly pulverizethesoil.)

• Ifthegardensizewill notpermit lengthwiseandthencrosswisetilling,thenover-

lapthefirst passesbyone-halfatiller

Fig. 4-8

Fig. 4-6 Fig. 4-7

Cultivating

With planning, you can _ _ r_

allowenoughroom _ _-_"-(_"

betweenrows tocultivate _ _

(seeFig.4-9). Leaveroom _ _

for the hood width,

plus enough extra _ _'

roomfor future plant Fig. 4-9

growth.

TILLING TIPS& TECHNIQUES(CON'T)

PowerComposting

Powercompostingsimplymeanstillingunderand buryingin thesoilall manneroforganic WARNING: Whenpower

mattersuchascropresidues,leaves,grassclippingsandcovercrops. This materialwillde, composting, do not keepthe

composeduring thenon-growingseasonandadd imPortantnaturalnutrientsto the so DepthRegulator Leverata

Thefirst placeto beginiswith cropresiduessuchasleftovervines,stalks,stemsand roots• deepsetting if theti!ler jumps

Powercompostthesecropresiduesassoonastheyfinish bearing.Thesoonerthis isdone, or bucks.

thebetter,astendergreenmatteriseasiertotill under. Usethedeepestdepthregulatorset- If jumping or bucking occurs,

ting possiblewithoutcausingthe engineto laboror thetillerto jumpahead, movethe DepthRegulator

Leverdown to ashallow

Standingcornstalksof reasonableheightcanbepowercomposted.Pushing over(but not setting andthen slowly

uprooting)cornstalkswill oftenmakeit easierto chopupthe stalks•Keepthetines clearof increasethetilling depth on

excessivetanglingby,fishtailing"or frequentlyusingreverse.Makeseveralpasses,thenre- I t r

turnafewdayslatertofinishoffanyremainingstubble. Lee passes;, ... .

t-allure[o follow tins warmng

Aftertilling undercropresidues,addmoreorganicmattersuchasleaves,grassclippingsand cou d result n oersona n urv

evenkitchenscraps. Whentilled intothe soil,this organicmatterwill decomposeandadd

evenmoreimportantnutrientsto the soil•

Afterpowercomposting,youmaywantto planta "greenmanure'!covercropto protectthesoilduringthe off-season.Yousimplygrowa

cropof clover,alfalfa,buckwheat,peas,beans,ryegrass,grain,or kaleandthentill it intothe soil priorto the plantingseason.

TillingOnSlopes

Readthefollowingrecommendationsbeforetilling onslopes:

you mustgardenon a moderateslope,pleasefollow two very _mportantgmeennes:

1.Til!onlyon moderatemodes,neveron steepgroundwherefootingisdifficult Ireviewsafe-

ryrulesin Section1:Safetyof this manuaU.

2. We recommendtilling upand clownslopes ratherthanterracing. Tillingverticallyon a

slopeallowsmax_murrplantingareaand alsoleavesroomfor cultivating.

IMPORTANT,"Whentilling on slopes besurethecorrectoil levelismaintainedintheengine

checkeveryone-halfhour of oeeratlonL Theinclineof the sloeewl causerne el to slant

awayfrom _tsnormalleveland_n_scanstarveenginepartsof requiredlubrication. Keepme

motorOHlevelatthefull eointatall times!

WAF{NINEi: Donot

operatetiller on aslopetoo

steep for safe operation. Till

slowly and besureyou have

good footing. Neverpermzt

tiller tofreewheel down

slopes.Failureto follow this

warning could result in

personalinjury.

Tilling Upand DownSlopes(VerticalTilling)

• Tokeepsoil erosionto a minimum, besureto addenoughorganicmattertothe softsothat it hasgoodmoisture-holdingtextureandtry

toavoidleavingfootprints or wheelmarks.

• Whentilling vertically,try to makethefirst eass. _hillasthetiller digs moreaeeplygoing uphillthan itdoesdownhill. Insoftsoil or

weeas,you mayhaveto lift thehandlebarsslightlywhilegoinguphill. Whengoingdownhill,overlapthefirst passbyaboutone-halfthe

width ofthetiller.

TillingAcrossSlopesWithoutUsingTerraces(HorizontalTilling)

• f verticalor terracinggardeningaren't practicalfor you,then youcantill laterallyacrossa slope. Wedon't recommendthis methodas

t cancreateunsurefooting and invitessoil eromon.

• As interracegardemng,startatthetop oftheslopeandoverlapthefirst passey _alfthewidthof thetiller. Foraddedstabilityofthetiller.

alwayskeeptheuphillwheelinthesoft. new_yhliedSOIL

TerraceGardening

• Whena slope_stoo steepor too short for verticaltilling, _tmay benecessaryto t_llacrossthesloaeandcreateterracedrows.Terraces

arerowsthat arecut rotethe sideof a slope,creatinga narrow,butflat areaon whichto plant.

• Ona longs_ope,you canmakeseveralterraces,one belowthe other.

• Terracesshouldbeonly2-to-3 feetwide.Diggingtoofar intothesideoftheslopewil! exposepoorsubsoilthat is unproductivefor plants.

TILLING TIPS& TECHNIQUES(CON'T)

TerraceGardening(continued)

• Tocreateaterrace,startatthetopoftheslopeandworkdown.Gobackandforth

acrossthefirst rowas shownin Fig.4-10.

• Eachsucceedinglowerterraceisstartedbywalkingbelowtheterraceyou'repre- e_ll_l___....__,_,.. _e

paring. Foraddedstabilityofthetiller,alwayskeeptheuphillwheelinthesoft, new-

ly tilled soil. Donot till the last 12"or moreof the downhill outsideedgeof each _1_

terrace. This untilled strip helps preventsthe terracesfrom breakingapartand

ClearingtheTines

Thetines havea self-clearingaction which eliminatesmosttanglingof debrisin

thetines. However,occasionallydry grass,stringystalksor toughvinesmaybe-

cometangled• Followthese proceduresto helpavoidtanglingandto cleanthe

tines,if necessary.

• To reducetangling,set the depth regulatordeep enoughto get maximum

"chopping"actionasthetines chopthematerialagainsttheground. Also,try to

till undercrop residuesor covercropswhiletheyaregreen,moistandtender.

• While powercomposting,try swayingthe handlebarsfrom sideto side(about

6"to 12'_).This"fishtailing"action oftenclearsthetines of debris.

• If tanglingoccurs,liftthetinesout ofthesoilandrunthetiller inreverse(if unit

is equippedwith poweredreverse) for a fewfeet. This reversingactionshould

unwinda gooddealof debris•

• Itmaybenecessaryto removethedebrisbyhand

(a pocketknifewill helpyouto cut awaythe mate-

rial).Besuretostop theengineand disconnectthe

spark plugwirebeforeclearingthetines byhand.

_ WARNING: Beforeclearingthe

tines byhand,stop the engine,allow

all moving partsto stop and

disconnect thespark plug wire.

Removethe ignition keyon electric

start models.

Failureto follow this warning could

result in personalinjury.

LOADINGANDUNLOADING • Usesturdy rampsand manually(engine tiller aheadof you. Havea personat each

THETILLER shut off) roll the tiller into and out of the sideto turn the wheels.

vehicle.Two or morepeopleare neededto • Whengoing down ramps,walk back-

,_ WARNING: Loadingand do this. ward with thetiller following you.Keep

unloadingthe tiller intoa • Theramps must be strong enough to alertfor any obstacles behindyou. Posi-

vehicle ispotentially hazardous support the combined weight of the tiller tion a person at eachwheelto control the

andwedon't recommenddoing and any handlers•Theramps should pro- speedof thetiller• Nevergo down ramps

sounlessabsolutelynecessary, vide goodtraction to preventslipping; they tiller-first, as the tiller could tip forward.

asthis could result in personal should havesiderails to guidethe tiller * Placewooden blocks onthe downhill

injury or property damage• alongthe ramps;and they should havea side ofthe wheels if you needto stop the

However,if you must load or locking deviceto secure them to the tiller from rolling down the ramp. Also,

unloadthetiller, follow the vehicle• usethe blocksto temporarily keepthe tiller

guidelinesgiven next. • Thehandlersshouldwearsturdyfootwear inplaceontheramps(ifnecessary),andto

that will helpto preventshppmg

• Beforeloading or unloading,stop the en- " " " , chock the wheelsin placeafter the tiller is

gine,wait for all parts to stop moving, • Position the loading vehicle sothat the in the vehicle.

disconnect the spark plug wire and letthe rampangle isas flat as possible (the less • After loadingthe tiller, preventit from

engineand muffler cool. inclineto the ramp, thebetter). Turnthe rolling byengagingthe wheels in the

° Thetiller is t°° heavyand bulky t° lift vehicle'sengine °ff and apply its parking WHEELDRIVEposition. Chockthewheels

safelyby one person Two or more people brake, with blocksandsecurelytie thetiller down.

should sharethe load. • When goingup ramps, stand in the

normal operating position and pushthe

SECTION5: MAINTENANCE

,_ WARNING: Before

inspecting, cleaningor servicing

the machine,shut off engine,

wait for all moving partsto come

to a completestop, disconnect

spark plug wire andmove wire

awayfrom spark plug. Remove

ignition key on electricStart

models.

Failuretofollow these

instructions canresult in serious

personalinjury or property

damage.

MAINTENANCE SCHEDULE

PROCEDURE NOTES

Checkmotoroil level

Cleanengine

Checkdrivebelttension

Checknutsandbolts

Changemotoroil

Lubricatetiller

Serviceengineaircleanersystem

Checkgearoil levelintransmission

Checktinesfor wear

Checkair pressureintires

(if unithaspneumatictires)

Servicesparkplug

2,3

2,7

1,4

i, 4

4,6,9

1,5

NOTES

I - Checkafter first 2 hours of break-in operation.

2 - eefora eachuse.

3 - Every5 operating hours.

4, Every!Ooperatinghoura.

5 - Every30 operating hours.

6 - Changemore frequently in dusty Conditions.

7 - See EngineOwner's Manual forservice

recommedations.

8- Whichevertimeintervaloccursfirst.

g - Changeaftergrst2hoursofbrsak-in

TILLERLUBRICATION

After every 10 Operatinghours, oil or

greasethe lubrication points shown in

Figure5-1 and described belOW,

Usecleanlubricating oil (#30weight motor

oil is suitable) and cleangeneralpurpose

grease(greasecontaining a metallubricant

is preferred, if available).

• Removethewheels,cleanthewheelshaft

(A, Fig.5-1) and apply a thin coating of

greaseto the wheelshaft,

• Greasethe back,front and sidesofthe

depth regulator lever (B,Fig. 5-1).

• Removethe tines andcleanthetine shaft

(C, Fig.5-1). Use a file or sandpaperto

gently remove anyrust, burrs or rough

spots (especiallyaround holes in shaft).

Applygreaseto endsof shaft beforeinstall-

If a cover is leaking,checkfor loose

screws. If the screws aretight, a new

gasket or oi!seal may be required.

If the leakisfrom around a shaftand oil

seal, the oil seal probably needsto be

replaced. Seeyour authorizeddealeror

contact thefactory for serviceor advice.

IMPORTANT:Neveroperatethe tiller if

the transmission is low on oil. Check

the oil levelafter every30 hours of

operationand wheneverthere isany oil

leakage.

CHECKHARDWARE

Checkfor looseor missing hardwareaf-

ter every 10 operatinghoursand tighten

or replace(as needed)beforereusing

tiller

Besureto checkthe screws underneath

ing tines, thetiller hoodthat securethetransmis-

• Oilthe threads onthe handlebarheight sioncoverandthe DepthRegulatorLever

adjustment screws andthe handlebar to thetransmission.

attaching screws (D, Fig.5-1). CHECK TIRE PRESSURE

(Models with pneumatic tires)

airOhecktheairpressureinbotht,reS.pressureshou,dbebetween15ps,The

B_ and20 PSI(pounds per squareinch).

Keepbothtires equally inflatedto help

prevent machinefrom pulling to one

side.

TRANSMISSION

GEAROILSERVICE

Figure5.1

CHECKFOROILLEAKS

Beforeeachuse,checkthetiller for signs of

an oil leak-- usuallya dirty, oily accumu-

lationeither on the unit or on thefloor.

A little seepagearound a cover or an oil

sealis usually not a causefor alarm. How-

ever,if the oil drips overnight, then imme-

diateattention is needed. Ignoring an oil

leakcanresult in severe transmission

Checkthetransmission gear oil level

after every 30 hoursof operationor

wheneveryou noticeany oil leak. Oper-

ating thetiller whenthe transmission is

low on oil can result in severedamage.

A. ToChecktheTransmission

GearOil Level:

1. Checkthe gearoil levelwhenthe

transmission is cool. Gearoil will

expandin warm operatingtemperatures

andthis expansionwill providean incor-

rect oil levelreading.

2. With thetiller onlevelground, pullthe

Depth RegulatorLeverall the way up.

3. Removethe oil fill plug (A, Fig.5-2)

from thetransmission housingand look

damage] insidethe oil fill holeto locatethe main

drive shaft situated belowthe hole.

WARNING: Beforeinspecting, cleaningor servicingthe machine,shut off engine,wait for all

moving partsto come to a completestop, disconnect spark plug wireand move wireawayfrom

spark plug. Failureto follow these instructions can result in serious personalinjury or property

damage.

4. Thegear oil levelis correct ifthe gear B. ToDrainthe TransmissionGearOil:

oil isapproximately halfwayupthe side of

the maindrive shaft.

5. If the gear oil levelislow. add gearoil

asdescribed next. If the gear gellevelis

okay,securelyreplacethe oil fill plug.

IMPORTANT:Donot operatethe tiller ifthe

gear oil levelis low. Doingso will result i_

severedamageto the transmission com-

ponents.

Figure5-2: Removeoil fittplug (.4) tocheck

gear oillevel andtoadd gear oil. Remove

fourcoverscrews(B) todraingear oil.

6. If adding onlya few ouncesof gear oil.

useAPI ratedGL-4or GL-5gearoil having

a wscosEtyof SAE140. SAE85W-140 or

SAE80W-90. If refilling an empty trans-

mission, useonly GL-4gear oil havinga

viscosity of SAE85W-140 or SAE140.

IMPORTANT:Do not useautomatic trans-

mission fluid or motor oil in the transmis-

sion.

7. While checkingfrequently to avoid

overfilling, slowly add gear oil into the oil

fill holeuntil it reachesthehalfwaypointon

thedrive shaft.

8. Securely replacethe oilfill plug.

BOLO TINES

Thetransmission gear oil doesnotneedto Thebole tines will wearwith useand

bechangedunless it hasbeencontaminat- should be inspectedat the beginning of

ed with dirt sand or metal particles, eachtilling seasonand after every30 oper-

1. Draingasolinefrom the fuel tank or run ating hours. Thetines can be replacedel-

theengine untilthe fuel tank is empty.See ther individually or as acomplete set. See

'DANGER"statement below.

WARNING: Gasolineis

highlyflammableandits vapors

are explosive. Followthese

safety practicesto prevent

personalinjury or proper_y

damagefrom fire or explosion.

• Allowthe engineandmufflerto coolfor

at least twominutesbeforedrainingthe

tiger's gasolinetank.

• Do not allow open flames, sparks,

matchesor smokinginthe area.

• Wipe awayspills and pushtiller away

fromspilledfuel.

• Use only an approvedfuel container

the Parts Lisl pagesfor tine identification

and part numbers,

A. Tine Inspection:

With use the tines will becomeshorter.

narrower and pointed. Badlyworn tines

will result in a loss of tilling depth, and re-

ducedeffectivenesswhen chopping up

andturning under organic matter.

B. Removin_nstalling a SingleTine:

1. With the engineshut off andthe spark

plug wire disconnected, removethe two

screws IA,Figure5-3), Iockwahers(Eband

nuts (B) that attacha singletine to a tine

holder. If needed,use penetratingoil on

the nuts.

andstoreitsafelyoutofthereachofchil- 2. Wheninstalling a singletine. besureto

dren.

• Donotstore gasolinein anareawhere

its vaporscouldreach an openflame or

spark, or where ignition sources are

present (such as hot water and space

heaters, furnaces, clothes dryers,

stoves,electricmotors,etc.)

2. Drainthe oil from the engine.

3. Removefour screws(B,Figure5-2) and

removetransmissioncoverandgasket.

4. Removethe left-side wheel.

5. Tilt the left-side wheelshaft into a drain

panand allowthe gearoil to drainthrough

the top of thetransmission.

6. Reinstallthe wheel.

7. Install a new gasket(do not reuseold

gasket and reinstallthe transmission cov-

er.

position it so that its cutting edge (sharp)

will enter thesoil first as the riflermoves

forward.

C. Removin_nstalling aTineAssembly:

1. A tine assemblyconsists of eighttines

mounted on atine ilolder.

2. If removing bothtine assemblies mark

them "left" and "right" beforeremoval.

Removethe screw (C, Figure5-3), lock

washer (E_and Iocknut [D that securethe

tineassembly tothe tine shaft. If neces-

sary,usea rubber malletto tapthe tineas-

sembly outward off the shaft.

3. Beforereinstalling thetine assembly,in-

spectthetineshaftfor rust, roughspots or

burrs. Lightly file or sand.as needed. Ap-

ply a thin coat of greaseto the shaft.

4. Install eachtineassembly so that the

cutting (sharp) edgeof the tines will enter

8. Refillthetransmission usingGL-4 gear thesoil first whenthetiller movesforward.

ozltSAE85W-140 or SAE140). Securethe tine assemblyto the tineshaft

9. Refillthe engine with motor oil and re- using thescrew and Iocknut

plenishthe fuel tank with gasoline.

WARNING: Beforeinspecting, cleaningor servicingthe machine,shut off engine,wait for all

moving partsto come to a completestop, disconnect spark plug wireand move wireawayfrom

spark plug. Failureto follow these instructions can result in serious personalinjury or property

damage.

FF_ONTi

FORWARD

SHAFT

h Unthreadthe hexnut IC, Figure5-4)

halfway upthe adjustment screw (D_.

c. Unhookthe top of the spring from

the Forward ClutchBail.

d. Usepliersto preventtheadjuster (B_

from turning and turn the slotted screwlo-

cated insidethe spring clockwise ,viewed

from operator's position} to increaseten-

sion on the spring. Turnthe screw coun-

terclockwise to decreasetension. Once

adjusted,reattachthe spring to the For-

ward Clutch Ba_l.

e. RepeatSteps2and 3to re-measure

thelengthofthespring. Whenthe second

measurementis between1/16"-to- 3/16"

longerthanthefirst measurement,retighten

thehexnut(C)againstthetop oftheadjuster

(B/.

Figure5-3: Installtinessothatcuttingedgeoftinesentersoftfirstwhentillermovesforward.

CHECKING AND ADJUSTING

FORWARD DRIVE BELT TENSION

It is important to maintain correct tension

on the forward drive belt. Aloose beltwill

causethetinesandwheelsto slow down--

or stop completeiy -- eventhough the en-

gine _srunning atfull speed. A too tight

belt canresult in unintentionaltine move-

ment whenthe clutch bail is inthe Neutral

(released)position.

• Checkbelttension after the first two

hoursof break-inoperationand after every

10operating hours.

• At the endof eachtilling season,check

the beltfor cracks,cuts or frayed edges

and replaceit assoon as possible.

ToCheckForwardBeltTension:

1. Stop engine,wait for all partsto stop

mowng anddisconnect spark plug wire.

2. With the ForwardClutchBailinan open

(releasedl position,measureand notethe

overalllengthofthecablespring (A,Figure

5-4) bymeasuringfrom the outermost coil

to the outermost coil.

3. Squeezethe ForwardClutch Bail

againstthe handlebar(seeFigure5-4) and

ReplacementBelt Information

If the drive belt needsto be replaced,see

belttension is correct ifthis second mea- your localauthorized dealeror referto the

suremenl is between1/6' -to-3/16"longer PartsList for ordering information. Use

than the first measurement, only afactory-authorized beltasan "over-

4. If the spring Lstoo short tless than 1/ the-counter" belt may not perform satis-

16'1.thetension istoo loose. If the spring factorily. The procedurerequiresaverage

is too long _morethan 3/16'h.the tension mechanicalability andcommonly available

tools.

is too tight.

5. Toadjust the length of the spring:

a. Releasethe Forward ClutchBail.

Figure5-4: Tocheckforwardbelt tension,taketwomeasurementsofthe

nverelllengthofthe coilsin thespring-- firstwiththe clutchbail open,

thenwith theclutchbail closedagainstthe handlebar.

re-measurethe length of the coils. The

WARNING: Beforeinspecting, cleaningor servicingthe machine,shut off engine,wait for all

moving partsto come to a completestop, disconnect spark plug wireand move wireawayfrom

spark plug. Failureto follow these instructions can result in serious personalinjury or property

damage.

FORWARDCLUTCH

BAILADJUSTMENT

If the ForwardClutch Bail doesnot func-

tion properly,first checkthat theforward

drive belt isadjusted properly (seeCheck-

ing andAdjusting ForwardDrive Belt Ten-

sion). If this fails to correct the problem,

contact Troy-Bilt LLCor your authorized

dealerfor serviceadvice.

CHECKING AND ADJUSTING RE-

VERSE DRIVE BELT TENSION

(Models 634F/634B only)

It is important to maintain correct tension

on the reversedrive belt. Aloosebeltwill

causethetines andwheelsto slow down-

or stop completely - eventhough the en-

gine is running atfull speed.

Whencheckingbelttension,alsocheckthe

beltfor cracks, cuts or frayed edgesand

replaceit as soonas possible.

• Checkbelttension after thefirst two

hoursof break-inoperationand after every

10 operating hours.

ToCheckReverseBelt Tension:

1. Stopengine, wait for all parts to stop

moving anddisconnect spark plug wire.

2. Removescrew in plasticbelt coverand

slide beltcover (which is attachedto for-

ward clutch cable)out of the way.

3. Havean assistant pull the Reverse

Clutch Control knoball theway out and

hold it inthat position. Measurethe length

of the cablewire betweenthe end of the

threadedcableadjuster (A,Figure5-5) and

theend of theZ-fitting (B) to which the ca-

ble wire is attached.

4. Thebelttension isidealifthe cablewire

lengthmeasuresbetween1/8"to 1/4". If it

is lessthan 1/8"(and if thereisno reverse

actionwhenthetiller isrunning),then make

thefollowing adjustments

NOTE:Ifthe lengthis morethan 1/4",noad-

justment isneeded--as long asthereverse

actionfunctions properly.

5. Releasethe ReverseClutch Control

knob.and then unthreadthe inner jam nut

(C, Figure5-6) oneto two turns. Pull the

threadedcableadjuster (A, Figure5-6) to

the left untilthe innerjam nut (C)touches

the bracket.

6. Preventtheinnerjam nut(C)fromturn-

ing and tighten the outer jam nut (D)

againstthe bracket. Preventthe outerjam

nut (D) from turning and tighten the inner

jam nut (C) againstthe bracket.

7. Measurethe gap by repeatingStep3.

Readjustas neededby repeatingSteps 5

and 6.

8. Reinstallthe belt cover.

Figure5-5: Measurecablewirelengthto

checkforcorrectreversebelttension.

Figure5-6: Movethreadedadjuster(,4)toleft

toincreasebelttension.

ReplacementBelt Information

If the drive belt needsto be replaced,see

your localauthorized dealeror referto the

Parts List for ordering information. Use

only a factory-authorized belt asan "over-

the-counter" belt may not perform satis-

factorily. The procedurerequiresaverage

mechanicalability andcommonly available

tools.

ENGINECLEANING

Keepingthe enginecleanwill helpto en-

suresmooth operationand prevent dam-

agefrom overheating. Referto theEngine

Owner'sManualfor engine cleaningser-

vice intervals and instructions. Besure

thatthe muffler iscool beforeservicingthe

engine.

AIRCLEANERSERVICE

Theair cleanerfilters dirt and dust out of

theair before it enters the carburetor. Op-

eratingthe enginewith a dirty, cloggedair

filter can causepoor performanceand

damageto the engine. Neveroperatethe

enginewithout theair cleanerinstalled. In-

spectand servicethe air cleanermore of-

ten if operating in very dusty or dirty

conditions. Referto the engine Owner's

Manualfor air cleanerserviceintervalsand

instructions.

ENGINEOILSERVICE

Checkthe engineoil levelbeforeeachuse

andafter everyfive hours of continuous

operation. Running theengine when it is

low on oil will quickly ruin the engine.

It is recommendedthat youchangethe

motor oil after every 10hours of operation

and evensoonerwhen operating in ex-

tremelydirty or dusty conditions. Referto

the EngineOwner'sManualfor detailed

service instructions.

A. ToChecktheEngine0il Level:

1. Parkthe tiller on a levelareaand shut

off the engine.

2. Levelthe engine(usethe Depth Regu-

lator Leverto adjust the engineangle).

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Troy-Bilt 21A-634B063 User manual

Brand: Troy-Bilt

Model: 21A-634B063

Category: Mini tillers

Type: User manual

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Troy-Bilt 21A-634B063 User manual

Troy-Bilt 21A-634B063 User manual

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