Toro 20-inch Mulching/Rear Bagging Lawn Mower User manual

FormNo.3429-270RevA

1P65F-2ServiceManual

Published:August2019

1P65FCand1P65FAenginespecicationsincluded

8111LyndaleAvenueSouth

Bloomington,MN55420

OriginalInstructions(EN)

Contactusatwww.Toro.com.

AllRightsReserved

RevisionHistory

RevisionHistoryPage2

1P65F-2ServiceManual

3429-270RevA

Preface

ThisservicemanualwaswrittenexpresslyforToroservicetechnicians.TheT oroCompanyhasmade

everyefforttomaketheinformationinthismanualcompleteandcorrect.

Basicshopsafetyknowledgeandmechanical/electricalskillsareassumed.TheT ableofContentslists

thesystemsandtherelatedtopicscoveredinthismanual.

Wearehopefulthatyouwillndthismanualavaluableadditiontoyourserviceshop.Ifyouhaveany

questionsorcommentsregardingthismanual,pleasecontactusatthefollowingaddress:

TheToroCompany

RLC/SWSCustomerCareDepartment

8111LyndaleAvenueSouth

Bloomington,MN55420

TheT oroCompanyreservestherighttochangeproductspecicationsormakechangestothismanual

withoutnotice.

1P65F-2ServiceManual

Page3

Preface

3429-270RevA

ServiceProcedureIcons

ThefollowingiconsappearthroughoutthisServiceManualtobringattentionto

specicimportantdetailsofaserviceprocedure.

CriticalProcess

Thisiconisusedtohighlight:

•Installingsafetyequipment(shields,guards,seatbelts,brakes,andR.O.P .S.

components)thatmayhavebeenremoved

•Dimensionsorsettingsthatmustbemaintainedforpropermachineoperation

•Aspecicfastenertighteningsequence

•Componentorientationthatmaynotbeobvious

CriticalTorque

Thisiconisusedtohighlightanassemblytorquerequirementthatisdifferent

thanwhatisrecommendedintheStandardTorqueT ables.

FluidSpecications

Thisiconisusedtohighlightuidspecicationsandcapacitiesthatareless

common,andmaynotappearonthemachineservicedecalorinthemachine

Operator’sManual.

Note:RefertotheservicedecalonthemachineandthemachineOperator’s

Manualforcommonlyuseduidspecicationsandcapacities.

Preface

Page4

1P65F-2ServiceManual

3429-270RevA

TableofContents

Preface................................................................................................................3

Chapter1:Safety............................................................................................1–1

SafetyInstructions.......................................................................................1–2

Chapter2:SpecicationsandMaintenance....................................................2–1

Specications...............................................................................................2–2

TorqueSpecications...................................................................................2–9

Chapter3:Troubleshooting.............................................................................3–1

GeneralTroubleshooting..............................................................................3–3

Chapter4:EngineT opEnd..............................................................................4–1

GeneralInformation.....................................................................................4–2

ServiceandRepairs.....................................................................................4–3

Chapter5:AirIntakeSystem...........................................................................5–1

GeneralInformation.....................................................................................5–2

ServiceandRepairs.....................................................................................5–3

Chapter6:FuelSystem...................................................................................6–1

GeneralInformation.....................................................................................6–2

ServiceandRepairs.....................................................................................6–3

Chapter7:CompressionSystem.....................................................................7–1

GeneralInformation.....................................................................................7–2

ServiceandRepairs.....................................................................................7–3

Chapter8:ElectricalSystem...........................................................................8–1

GeneralInformation.....................................................................................8–2

ServiceandRepairs.....................................................................................8–3

Chapter9:EngineLowerEnd..........................................................................9–1

GeneralInformation.....................................................................................9–2

ServiceandRepairs.....................................................................................9–3

1P65F-2ServiceManual

Page5

Preface

3429-270RevA

Preface

Page6

1P65F-2ServiceManual

3429-270RevA

Chapter1

Safety

TableofContents

SafetyInstructions................................................................................................................................1–2

ThinkSafetyFirst...............................................................................................................................1–2

1P65F-2ServiceManual

Page1–1

Safety

3429-270RevA

SafetyInstructions

DANGER

Thissafetysymbolmeansdanger.Whenyouseethissymbol,

carefullyreadtheinstructionsthatfollow.Failuretoobeythe

instructionscouldcauseseriouspermanentinjury,disability,or

death.

WARNING

Thissafetysymbolmeanswarning.Whenyouseethissymbol,

carefullyreadtheinstructionsthatfollow.Failuretoobeythe

instructionscanresultinseriousinjury.

CAUTION

Thissafetysymbolmeanscaution.Whenyouseethissymbol,

carefullyreadtheinstructionsthatfollow.Failuretoobeythe

instructionscanresultinminortomoderateinjuryand/ordamage

topropertyorequipment.

ThinkSafetyFirst

Avoidunexpectedstartingofengine…

Alwaysturnofftheengine,removetheignitionkeyanddisconnectthesparkplug

wire(s)beforecleaning,adjusting,orrepair.

Avoidlacerationsandamputations…

Stayclearofallmovingpartswhenevertheengineisrunning.Treatallnormally

movingpartsasiftheyweremovingwhenevertheengineisrunningorhas

thepotentialtostart.

Avoidburns…

Donottouchtheengine,mufer,orothercomponents,whichmaybehotduring

operation,whiletheunitisrunningorshortlyafterithasbeenrunning.

Avoidresandexplosions…

Useextremecareinhandlingfuel.Itisammableanditsvaporsareexplosive.

Extinguishallcigarettes,cigars,pipes,andothersourcesofignition.Avoid

spillingfuelandneversmokewhileworkingwithanytypeoffuelorlubricant.

Wipeupanyspilledfueloroilimmediately.Neverremovethefuelcaporadd

fuelwhentheengineisrunning.Alwaysuseapproved,labeledcontainersfor

storingortransportingfuelandlubricants.Donotaddordrainfuelinanenclosed

space.Donotstorethemachineorfuelcontainerwherethereisanopename,

spark,orpilotlight,suchasonawaterheaterorotherappliance.

Avoidasphyxiation…

Donotoperateanengineinaconnedareawithoutproperventilation.

Avoidinjuryfrombatteries…

Safety:SafetyInstructions

Page1–2

1P65F-2ServiceManual

3429-270RevA

ThinkSafetyFirst(continued)

Batteryacidispoisonousandcancauseburns.Avoidcontactwithskin,eyes

andclothing.Batterygasescanexplode.Keepcigarettes,sparksandames

awayfromthebattery.

Avoidinjuryduetoinferiorparts…

Useonlyoriginalequipmentpartstoensurethatimportantsafetycriteriaaremet.

Avoidinjurytobystanders…

Alwayscleartheareaofbystandersbeforestartingortestingpowered

equipment.

Avoidinjuryduetoprojectiles…

Alwayscleartheareaofsticks,rocksoranyotherdebristhatcouldbepickedup

andthrownbythepoweredequipment.

Avoidmodications…

Neveralterormodifyanypartunlessitisafactoryapprovedprocedure.

Avoidunsafeoperation…

Alwaystestthesafetyinterlocksystemaftermakingadjustmentsorrepairson

themachine.RefertotheElectricalsectioninthismanualformoreinformation.

Avoidelectricalshock…

Nevertouchelectricalwiresorcomponentswhiletheengineisrunning.They

canbesourcesofshock.De-energizethesystemifyouarehavingtodorepairs.

Iftestingelectricalcomponentsensureyouareworkinginadryenvironment.

HydraulicSystem...

Releaseallpressureinthehydraulicsystembeforeperforminganyworkon

thesystem.Keepyourbodyandhandsawayfrompin-holeleaksornozzles

thatejecthydraulicuidunderhighpressure.Donotuseyourhandstosearch

forleaks.Hydraulicuidescapingunderpressurecanhavesufcientforceto

penetratetheskinandcauseseriousinjury.Seekmedicalattentionrightawayif

hydraulicuidgetsintheskin.

PersonalProtectiveEquipment…

Useappropriatepersonalprotectiveequipment(PPE)forprotectingyourself

frompotentialhazardsintheenvironmentinwhichyouwillwork.Eachprocess

outlinedinthismanualmayneeddifferentPPEtoprotecttheserviceperson.

UsetheproperPPEforthetaskathand.

Tools…

Alltoolsshouldbeinproperworkingorder.Donotusetoolsthatarebrokenorin

disrepair.Usethepropertoolfortheproperapplication.

Lifts,Hoists,andJacks…

Alllifts,hoists,andjacksshouldbeusedinaccordancewiththemanufacturer

information.Inspectlifts,hoists,andjackspriortouse.Donotoverloadlifts,

hoists,andjacks.Donotworkunderasuspendedload.Ensurechockblocks

areusedonequipmentthatcanmove.Useliftsorjacksandjackstandsthat

areratedtosupportthetotalweightofthemachineandanyattachments.Do

notrelyonjackstosupportthemachine.Ifyouareunsureoftheoperationof

anylifts,hoists,andjacksdonotuse.

FireExtinguishers…

Theproperclassofreextinguishershouldbeusedincaseofre.

1P65F-2ServiceManual

Page1–3

Safety:SafetyInstructions

3429-270RevA

ThinkSafetyFirst(continued)

ClassAextinguishersareforordinarycombustiblematerialssuchaspaper,

wood,cardboard,andmostplastics.Thenumericalratingonthesetypesof

extinguishersindicatestheamountofwateritholdsandtheamountofreitcan

extinguish.Geometricsymbol(greentriangle).

ClassBresinvolveammableorcombustibleliquidssuchasgasoline,

kerosene,greaseandoil.ThenumericalratingforclassBextinguishers

indicatestheapproximatenumberofsquarefeetofreitcanextinguish.

Geometricsymbol(redsquare).

ClassCresinvolveelectricalequipment,suchasappliances,wiring,circuit

breakersandoutlets.NeverusewatertoextinguishclassCres-theriskof

electricalshockisfartoogreat!ClassCextinguishersdonothaveanumerical

rating.TheCclassicationmeanstheextinguishingagentisnon-conductive.

Geometricsymbol(bluecircle).

ABC

reextinguishersareadrychemicaltypeusedformultiplepurposes.Seeabove

informationfordescription.

Ensurereextinguishersareserviceableandreplaceanythataredischargedor

outofinspectiondates.

Safety:SafetyInstructions

Page1–4

1P65F-2ServiceManual

3429-270RevA

Chapter2

SpecicationsandMaintenance

TableofContents

Specications.......................................................................................................................................2–2

TorqueSpecications...........................................................................................................................2–9

EquivalentsandConversions...........................................................................................................2–14

U.S.toMetricConversions..............................................................................................................2–15

1P65F-2ServiceManual

Page2–1

SpecicationsandMaintenance

3429-270RevA

Specications

1P65F–2EngineSpecications

Model1P65F-2

EngineNameToro

Type

SingleCylinder4–stroke,ForcedAirCooledOHVEngine

BoreXStroke

65mmx48mm

Displacement159cc

CompressionRatio

7.6:1

Lubrication

Splash

StartingRecoil/Electric

Rotation

Counter-Clockwise(fromPTOSide)

IgnitionSystem

TransistorizedMagnetoIgnition

AirCleanerFoam/Paper

FuelType

UnleadedGasoline87Octane10%Ethanol

OilCapacity18oz(0.53L)

Dimension(LxWxH)15in.x13.5in.x10in.(38.10x34.29x25.40cm)

Weight

31lbs.(14.06kg)

Operating(top)RPM

3000±100RPM

1P65F–2EnginePartSpecications

PartItem

StandardServiceLimit

CylinderHead

Warpage

N/A0.004in.(0.10mm)

CylinderSleeve(InsideDiameter)2.559in.(65mm)2.565in.(65.165mm)

SkirtOutsideDiameter2.558in.(64.985mm)2.552in.(64.845mm)

ClearancetoCylinder

0.00059-0.00196in.

(0.015-0.05mm)

N/A

PistonPinBoreInside

Diameter

0.512in.(13.002mm)0.514in.(13.048mm)

Piston

Piston-PinClearance

0.00008-0.00055in.

(0.002-0.014mm)

0.00314in.(0.08mm)

OutsideDiameter0.512in.(13.0mm)0.510in.(12.954mm)

PistonPin

SideClearance(Top/Middle)

0.00056-0.00177in.

(.015-0.045mm)

0.0059in.(0.15mm)

EndGap(Top/Middle)

0.0078-0.0156in.(0.2-0.4

mm)

0.040in.(1.0mm)

Width(T op/Middle)0.0397in.(1.0mm)0.0342in.(0.87mm)

PistonRing

Width(OilRing)0.098in.(2.5mm)0.093in.(2.37mm)

SmallEndInsideDiameter0.513in.(13.02mm)0.515in.(13.07mm)

BigEndInsideDiameter

1.024in.(26.02mm)1.026in.(26.07mm)

LargeEndtoCrankJournal

Clearance

0.0016-0.0025in.

(0.04-0.063mm)

0.0047in.(0.12mm)

ConnectingRod

LargeEndSideClearance

0.0039-0.0275in.(0.1-0.7

mm)

0.0433in.(1.1mm)

CrankshaftCrankPinOutsideDiameter1.022in.(25.98mm)1.020in.(25.92mm)

SpecicationsandMaintenance:Specications

Page2–2

1P65F-2ServiceManual

3429-270RevA

1P65F–2EnginePartSpecications(continued)

PartItem

StandardServiceLimit

Clearance(Cold)Intake

0.004-0.006in.(0.10-0.15

mm)

N/A

Clearance(Cold)Exhaust

0.006-0.008in.(0.15-0.20

mm)

N/A

StemDiameter(Intake)0.216in.(5.48mm)0.209in.(5.318mm)

Valve

StemDiameter(Exhaust)0.214in.(5.44mm)0.208in.(5.275mm)

InsideDiameter(Intake,

Exhaust)

0.2165in.(5.50mm)0.2193in.(5.572mm)

StemtoGuideClearance

(Intake)

0.00039-0.00133in.

(0.01-0.034mm)

0.00393in.(0.10mm)

ValveGuide

StemtoGuideClearance

(Exhaust)

0.00196-0.00275in.

(0.05-0.070mm)

0.0047in.(0.12mm)

ValveSeatSeatWidth0.0315in.(0.8mm)0.0787in.(2.0mm)

ValveSpring

FreeLength

1.202in.(30.5mm)1.141in.(29.0mm)

Height(Intake)1.091in.(27.72mm)1.080in.(27.45mm)

Height(Exhaust)1.093in.(27.78mm)1.0826in.(27.50mm) Camshaft

OutsideDiameter(Bearing)0.550in.(13.984mm)0.547in.(13.916mm)

CamshaftHoleDiameter0.551in.(14.0mm)0.553in.(14.048mm)

CrankcaseCover

CrankshaftHoleDiameter1.000in.(25.4mm)1.004in.(25.52mm)

SparkPlugGap

NGKBPR6HS/Champion

RL87YC

Gap0.030in.(0.7-0.8mm)

Resistance(Primary)

1.3-1.7ohms

N/A

Resistance(Secondary)

5.4-6.2ohms

N/A

IgniterCoils

GaptoFlywheel

0.0157±0.007in.(0.4-0.2

mm)

N/A

1P65F–2EngineTorqueSpecications

Item

ScrewThread

Torque

CylinderHeadBolt

M8

22-26ft-lbs.(30-36Nm)

ConnectingRodBolt

M7

108-132in-lbs.(13-15Nm)

FlywheelNut

M14(specialnut)59-66ft-lbs.(80-90Nm)

PivotAdjustingNut

M5(specialnut)52-87in-lbs.(6-10Nm)

CrankcaseCoverBolt

M6

70-105in-lbs.(8-12Nm)

MuferNut

M6

70-105in-lbs.(8-12Nm)

AirCleanerNut

M6

52-87in-lbs.(6-10Nm)

Recoil(FanCoverNut)

M6

52-87in-lbs.(6-10Nm)

OilDrainBolt

M10

13-18ft-lbs.(18-25Nm)

FuelTankBolt/Nut

M6

13-18ft-lbs.(18-25Nm)

GovernorArmPinchNut

M6

70-105in-lbs.(8-12Nm)

CarburetorBowlMountScrew

M8

52–79ft-lbs.(6-9Nm)

FuelDrainScrew

M6

52-79in-lbs.(6-9Nm)

ValveCoverBolt

M6

90in-lbs.(10Nm)

1P65F-2ServiceManual

Page2–3

SpecicationsandMaintenance:Specications

3429-270RevA

1P65F–2EngineTorqueSpecications(continued)

Item

ScrewThread

Torque

M4bolt

16-26in-lbs.(2-3Nm)

M5bolt/nut39-56in-lbs.(4.5-6.5Nm) StandardTorqueValue

M6bolt/nut70-105in-lbs.(8-12Nm)

1P65FCEngineSpecications

Model

1P65FC

EngineNameToro

Type

SingleCylinder4-Stroke,ForcedAirCooledOHVEngine

BoreXStroke

65mmx48mm

Displacement159cc

CompressionRatio

8to1

Lubrication

Splash

StartingRecoil/Electric

Rotation

Counter-Clockwise(fromPTOSide)

IgnitionSystem

TransistorizedMagnetoIgnition

AirCleanerFoam/Paper

FuelType

UnleadedGasolineMinimum87Octane10%Ethanol

OilCapacityMaxFill20oz(0.59L)

Dimension(LxWxH)15in.x13.5in.x14in.(38.10x24.29x35.56cm)

Weight

26.4lbs.(11.97kg)

Operating(Top)RPM

3000±100RPM

1P65FCEnginePartSpecications

PartItem

StandardServiceLimit

CylinderHead

Warpage

N/A0.004in.(0.10mm)

Cylinder

SleeveT aper/OutofRound

(InsideDiameter)

2.559in.(65mm)2.566in.(65.165mm)

SkirtOutsideDiameter2.558in.(64.985mm)2.552in.(67.845mm)

ClearancetoCylinder

0.00059-0.00196in.

(0.015-0.05mm)

0.0047in.(0.12mm)

PistonPinBoreInside

Diameter

N/A0.514in.(13.048mm)

Piston

Piston-PinClearance

0.00007-0.0005in.

(0.002-0.014mm)

0.00314in.(0.08mm)

OutsideDiameter0.512in.(13.0mm)0.510in.(12.954mm)

PistonPin

SideClearance

0.00059-0.00177in.

(.015-0.045mm)

0.0059in.(0.15mm)

EndGap(Top/Middle)

0.0078-0.0157in.(0.2-0.4

mm)

0.040in.(1.0mm)

Width(T op/Middle)0.0393in.(1.0mm)0.0342in.(0.87mm)

PistonRing

Width(OilRing)0.098in.(2.5mm)0.093in.(2.37mm)

SpecicationsandMaintenance:Specications

Page2–4

1P65F-2ServiceManual

3429-270RevA

1P65FCEnginePartSpecications(continued)

PartItem

StandardServiceLimit

SmallEndInsideDiameter0.513in.(13.02mm)0.515in.(13.07mm)

LargeEndInsideDiameter

1.024in.(26.02mm)1.026in.(26.07mm)

LargeEndtoCrankJournal

Clearance

0.0016-0.0025in.

(0.04-0.063mm)

0.0047in.(0.12mm)

ConnectingRod

LargeEndSideClearance

0.0039-0.0275in.(0.1-0.7

mm)

0.0433in.(1.1mm)

CrankshaftCrankPinOutsideDiameter1.022in.(25.98mm)1.020in.(25.92mm)

Clearance(Cold)Intake0.004in.(0.10mm)N/A

Clearance(Cold)Exhaust0.006in.(0.15mm)N/A

StemDiameter(Intake)0.216in.(5.48mm)0.209in.(5.318mm)

Valve

StemDiameter(Exhaust)0.214in.(5.44mm)0.208in.(5.275mm)

InsideDiameter(Intake,

Exhaust)

0.2165in.(5.50mm)0.2193in.(5.572mm)

StemtoGuideClearance

(Intake)

0.00039-0.00133in.

(0.01-0.034mm)

0.00393in.(0.10mm)

Valveguide

StemtoGuideClearance

(Exhaust)

0.0019-0.0027in.

(0.05-0.070mm)

0.0047in.(0.12mm)

ValveSeatSeatWidth0.0314in.(0.8mm)0.0787in.(2.0mm)

ValveSpring

FreeLength

1.2007in.(30.5mm)1.1417in.(29.0mm)

Height(Intake)1.0905in.(27.72mm)1.0807in.(27.45mm)

Height(Exhaust)1.0937in.(27.78mm)1.0826in.(27.50mm) CamShaft

OutsideDiameter(Bearing)0.550in.(13.984mm)0.548in.(13.916mm)

CamshaftHoleDiameter0.551in.(14.0mm)0.553in.(14.048mm)

CrankcaseCover

CrankshaftHoleDiameter1.000in.(25.4mm)1.005in.(25.52mm)

SparkPlugGap

NGKBPR6HS/Champion

RL87YC

Gap0.030in.(0.7-0.8mm)

Resistance(Primary)

1.1-1.6ohms

N/A

Resistance(Secondary)10.5Kohms±15%N/A IgniterCoils

GaptoFlywheel0.010in.(0.254mm)N/A

1P65FCEngineTorqueSpecications

Item

ScrewThread

Torque

CylinderHeadBolt

M8

25ft-lbs.(34Nm)

ConnectingRodBolt

M7

114in-lbs(13Nm)

FlywheelNutM14

62ft-lbs.(85Nm)

RockerArmAdjustingNutM6

120in-lbs.(14Nm)

CrankcaseCoverBolt

M6

90in-lbs.(10Nm)

MuferNut

M6

90in-lbs.(10Nm)

AirCleanerNut

M6

72in-lbs.(8Nm)

Recoil(FanShroud)Nut

M6

72in-lbs.(8Nm)

OilDrainBolt

M10

186in-lbs.(21Nm)

FuelTankBolt/Nut

M6

90in-lbs.(10Nm)

1P65F-2ServiceManual

Page2–5

SpecicationsandMaintenance:Specications

3429-270RevA

1P65FCEngineTorqueSpecications(continued)

Item

ScrewThread

Torque

FuelDrainScrew

M6

52–79in-lbs.(6–9Nm)

ValveCoverBolt

M6

90in-lbs.(10Nm)

CarburetorMountScrew

M8

52–79in-lbs.(6–9Nm)

SparkPlugN/A22ft-lbs.(30Nm)

GovernorArmPinchNut

M6

90in-lbs.(10Nm)

IgnitionandChargeCoilBolts

M6

90in-lbs.(10Nm)

ElectricStarterMotorBolts

M6

90in-lbs.(10Nm)

M5bolt/nut54in-lbs.(6Nm)

M6bolt/nut90in-lbs.(10Nm)

M8bolt/nut228in-lbs.(26Nm)

M10bolt/nut28ft-lbs.(38Nm)

StandardTorqueValue

M12bolt/nut41ft-lbs.(55Nm)

1P65FAEngineSpecications

Model1P65FA

EngineNameToro

Type

SingleCylinder4-Stroke,ForcedAirCooledOHVEngine

BoreXStroke

65mmx48mm

Displacement159cc

CompressionRatio

8to1

Lubrication

Splash

StartingRecoil/Electric

Rotation

Counter-Clockwise(fromPTOSide)

IgnitionSystem

TransistorizedMagnetoIgnition

AirCleanerFoam/Paper

FuelType

UnleadedGasolineMinimum87Octane10%Ethanol

OilCapacityMaxFill20oz(0.59L)

Dimension(LxWxH)15x13.5x14in.(38.10x34.29x35.56cm)

Weight

26.4lbs.(11.97kg)

Operating(Top)RPM

3000±100RPM

Idlespeed2200±150RPM

1P65FAEnginePartSpecications

Part

Item

StandardServiceLimit

CylinderHead

Warpage

N/A0.004in.(0.10mm)

CylinderOutofRoundSleeve(InsideDiameter)2.559in.(65mm)2.566in.(65.165mm)

SpecicationsandMaintenance:Specications

Page2–6

1P65F-2ServiceManual

3429-270RevA

1P65FAEnginePartSpecications(continued)

Part

Item

StandardServiceLimit

SkirtOutsideDiameter2.558in.(64.985mm)2.553in.(64.845mm)

ClearancetoCylinder

0.00059-0.00196in.

(0.015-0.05mm)

0.0047in.(0.12mm)

PistonPinBoreInside

Diameter

0.512in.(13.002mm)0.514in.(13.048mm)

Piston

Piston-PinClearance

0.00007-0.0005in.

(0.002-0.014mm)

0.00314in.(0.08mm)

PistonPin

OutsideDiameter0.512in.(13.0mm)0.510in.(12.954mm)

EndGap(Top/Middle)

0.0078-0.0156in.(0.2-0.4

mm)

0.040in.(1.0mm)

Width(T op/Middle)0.0590in.(1.5mm)0.0539in.(1.37mm)

PistonRing

Width(OilRing)0.098in.(2.5mm)0.093in.(2.37mm)

SmallEndInsideDiameter0.513in.(13.02mm)0.515in.(13.07mm)

LargeEndInsideDiameter

1.024in.(26.02mm)1.026in.(26.07mm)

LargeEndtoCrankJournal

Clearance

0.0016-0.0025in.

(0.04-0.063mm)

0.0047in.(0.12mm)

ConnectingRod

LargeEndSideClearance

0.0039-0.0275in.(0.1-0.7

mm)

0.0433in.(1.1mm)

CrankshaftCrankPinOutsideDiameter1.023in.(25.98mm)1.020in.(25.92mm)

Clearance(Cold)Intake

0.004-0.006in.(0.10-0.15

mm)

N/A

Clearance(Cold)Exhaust

0.006-0.008in.(0.15-0.20

mm)

N/A

StemDiameter(Intake)0.216in.(5.48mm)0.209in.(5.318mm)

Valve

StemDiameter(Exhaust)0.214in.(5.44mm)0.208in.(5.275mm)

InsideDiameter(Intake,

Exhaust)

0.2165in.(5.50mm)0.2193in.(5.572mm)

StemtoGuideClearance

(Intake)

0.00039-0.00133in.

(0.01-0.034mm)

0.00393in.(0.10mm)

ValveGuide

StemtoGuideClearance

(Exhaust)

0.00196-0.00275in.

(0.05-0.070mm)

0.0047in.(0.12mm)

ValveSeatSeatWidth0.0315in.(0.8mm)0.0787in.(2.0mm)

ValveSpring

FreeLength

1.200in.(30.5mm)1.142in.(29.0mm)

Height(Intake)1.091in.(27.7mm)1.081in.(27.45mm)

Height(Exhaust)1.093in.(27.75mm)1.0826in.(27.50mm) CamShaft

OutsideDiameter(Bearing)0.550in.(13.984mm)0.548in.(13.916mm)

CamshaftHoleDiameter0.551in.(14.0mm)0.553in.(14.048mm)

CrankcaseCover

CrankshaftHoleDiameter1.000in.(25.4mm)1.005in.(25.52mm)

SparkPlug

Gap

NGKBPR6HS/Champion

RL87YC

Gap0.030in.(0.7-0.8mm)

Resistance(Primary)

1.1-1.6ohms

N/A

Resistance(Secondary)10.5Kohms±15%N/A IgniterCoils

GaptoFlywheel0.010in.(0.254mm)N/A

1P65FAEngineTorqueSpecications

1P65F-2ServiceManual

Page2–7

SpecicationsandMaintenance:Specications

3429-270RevA

1P65FAEngineTorqueSpecications(continued)

Item

ScrewThread

Torque

CylinderHeadBolt

M8

25ft-lbs.(34Nm)

ConnectingRodBolt

M7

114in-lbs.(13Nm)

FlywheelNutM14

62ft-lbs.(85Nm)

RockerArmPivotStud

M8

22ft-lbs.(30Nm)

RockerArmLockNutM6

120in-lbs(14Nm)

CrankcaseCoverBolt

M6

90in-lbs.(10Nm)

MuferNuts

M6

90in-lbs.(10Nm)

AirCleanerNuts

M6

72in-lbs.(8Nm)

Recoil(FanCoverNut)

M6

72in-lbs.(8Nm)

OilDrainBolt

M10

180in-lbs.(21Nm)

FuelTankBolt/Nut

M6

90in-lbs.(10Nm)

FuelDrainScrew

M6

52–79in-lbs.(6–9Nm)

ValveCoverbolt

M6

90in-lbs.(10Nm)

CarburetorBowlMountScrew

M8

52–79in-lbs.(6–9Nm)

SparkPlugN/A22ft-lbs.(30Nm)

GovernorArmPinchNut

M6

90in-lbs.(10Nm)

IgnitionandChargeCoilBolts

M6

90in-lbs.(10Nm)

ElectricStarterMotorBolts

M6

90in-lbs.(10Nm)

M5bolt/nut54in-lbs.(6Nm)

M6bolt/nut90in-lbs.(10Nm)

M8bolt/nut228in-lbs.(26Nm)

M10bolt/nut28ft-lbs.(38Nm)

StandardTorqueValue

M12bolt/nut41ft-lbs.(55Nm)

SpecicationsandMaintenance:Specications

Page2–8

1P65F-2ServiceManual

3429-270RevA

TorqueSpecications

Therecommendedfastenertorquevaluesarelistedinthefollowingtables.For

criticalapplications,asdeterminedbyToro,eithertherecommendedtorqueora

torquethatisuniquetotheapplicationisclearlyidentiedandspeciedinthe

servicemanual.

Thesetorquespecicationsfortheinstallationandtighteningoffastenersshall

applyforallfastenerswhichdonothaveaspecicrequirementidentiedin

theservicemanual.Thefollowingfactorsshallbeconsideredwhenapplying

torque:cleanlinessofthefastener,useofathreadsealant(Loctite),degreeof

lubricationonthefastener,presenceofaprevailingtorquefeature,hardness

ofthesurfaceunderneathofthefastener’shead,orsimilarconditionwhich

affectstheinstallation.

Asnotedinthefollowingtables,torquevaluesshouldbereducedby25%for

lubricatedfastenerstoachievethesimilarstressasadryfastener.T orquevalues

mayalsohavetobereducedwhenthefasteneristhreadedintoaluminumor

brass.Thespecictorquevalueshouldbedeterminedbasedonthealuminum

orbrassmaterialstrength,fastenersize,lengthofthreadengagement,etc.

Thestandardmethodofverifyingtorqueshallbeperformedbymarkingalineon

thefastener(headornut)andmatingpart,thenbackofffastener1/4ofaturn.

Measurethetorquerequiredtotightenthefasteneruntilthelinesmatchup.

FastenerIdentication

InchSeriesBoltsandScrews

Figure1

1.Grade13.Grade8

2.Grade5

1P65F-2ServiceManual

Page2–9

SpecicationsandMaintenance:TorqueSpecications

3429-270RevA

MetricBoltsandScrews

Figure2

1.Class8.82.Class10.9

SpecicationsandMaintenance:TorqueSpecications

Page2–10

1P65F-2ServiceManual

3429-270RevA

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