Walker R21 User manual

Category
Lawnmowers
Type
User manual
Operator’s Manual
Safety, Assembly, Operating, and Maintenance Instructions
Please Read and Save These Instructions
For Safety, Read All Safety and Operation
Instructions Prior to Operating Machine
Beginning S/N: 160824
P/N: 1000-3
Foreword
Thank you. . .for purchasing a Walker mower. Every eort has been made to provide you with
the most reliable mower on the market, and we are sure you will be among our many satised
customers. If for any reason this product does not perform to your expectations, please contact
your local dealer. Every customer is important to us. Your satisfaction is our goal.
Please. . .read this manual thoroughly! This manual is to be used in conjunction with the engine
manufacturer’s manual for the specic engine on the mower model you have purchased. Be-
fore you operate your new mower, please read this entire manual. Some of the information is
crucial for proper operation and maintenance of this mower - it will help protect your investment
and ensure that the mower performs to your satisfaction. Some of the information is important
to your safety, and must be read and understood to help prevent possible injury to the opera-
tor or others. If anything in this manual is confusing or hard to understand, please contact your
local authorized dealer or call our service department, at (970) 221-5614, for clarication before
operating or servicing this mower.
This manual covers Model R with the Kohler KT620 (21 HP) Gasoline Engine.
All shields and guards must be in place for the proper and safe operation of this machine.
Where they are shown removed in this manual, it is for illustration purposes only. Do not oper-
ate this machine unless all shields and guards are in place.
Specications given are based on the latest information available at the time this manual was
produced for a tractor with standard equipment. Optional equipment is available and may aect
the standard specications listed.
Walker Mfg. Co. is continually striving to improve the design and performance of its products.
We reserve the right to make changes in specications and design without thereby incurring any
obligation relative to previously manufactured products.
Sincerely,
WALKER MANUFACTURING COMPANY
Bob Walker, Chairman
Table of Contents R21
General Information 1
Highlighted Information..........................................1
Glossary ................................................................2
Servicing of Engine and Transaxle Components...2
Identifying Number Locations ................................3
Tractor and Deck Identiers ...........................................3
Specications ........................................................4
Component Identication .......................................7
Safety Instructions 10
Safety Before Operating ......................................10
Safety During Operation ......................................11
Safety During Maintenance .................................13
Safety, Control, and Instruction Decals ...............14
Operating Instructions 19
Operator Controls ................................................19
Ignition Switch ..............................................................19
Engine Throttle .............................................................20
Steering Levers ............................................................20
Forward Speed Control (FSC) ......................................22
Blade Clutch Switch (PTO) ...........................................22
Parking Brake ...............................................................22
Circuit Breaker ..............................................................22
Seat Panel Latch ..........................................................23
Hourmeter.....................................................................23
Transaxle Lockout Arms ...............................................23
Pre-Operation Checklist ......................................24
Starting the Engine ..............................................25
Adjusting Ground Speed and Steering ................25
Recommendations for Getting Started: ...............27
Engaging the Blades ...........................................27
Stopping the Machine ..........................................28
Adjusting the Cutting Height ................................29
Deck Tilt-Up Position ...........................................29
Recommendations for Mowing ............................30
Transaxle Lockout ...............................................32
Recommendations for Tilt-up Deck Operation and
Transport .............................................................33
Maintenance 34
R21 Maintenance Schedule Chart.......................34
Check Engine Crankcase Oil...............................35
Check/Clean Engine Air Cooling System ............36
Clean Grass Buildup Under Deck........................37
Inspect/Service Mower Blades ............................37
Check Security of Air Filtration Components .......39
Check Discharge Shield ......................................39
Lubricate Grease Fittings and Oil Points .............39
Check Tire Pressure ............................................41
Check Drive Belts (Ground Drive, Blade) ............41
Check Safety Switch System...............................41
Clean/Replace Engine Precleaner Air Filter ........42
Replace Engine Air Filter .....................................43
Change Engine Crankcase Oil and Filter ............44
Clean Engine Cooling System .............................45
Replace Fuel Filter ..............................................46
Clean Transaxle Housing and Fans ....................46
Check Drive Tire Mounting Nuts ..........................47
Check Blade Brake Function ...............................47
Replace Spark Plugs and Set Gap ......................47
Check/Adjust Engine Valve Lash .........................47
Check FSC Friction Lock .....................................48
Check Transmission Control Settings..................48
Check Neutral-Park Position ........................................48
Check Straight Ground Tracking ..................................48
Check Fuel Lines and Clamps.............................48
Clean Battery Terminals ......................................49
Charge Battery ....................................................49
Long-Term Storage Preparation ..........................50
Mower Preparation for Storage ....................................50
Engine Preparation for Storage ....................................50
Restarting the Mower After Storage .............................50
Service and Adjustments 51
Belt Replacement ................................................51
Replacing the Blade Drive Belt (PTO) ..........................52
Replacing the Ground Drive Belt ..................................53
Deck Leveling ......................................................55
Steering Handle Adjustment ................................56
Forward Speed Control Friction Adjustment ........56
Neutral Function Adjustment ...............................57
Straight Tracking Adjustment ...............................58
Maximum Forward Speed Adjustment.................58
Table of Contents R21
Appendix: Assembly Instructions 59
Assembling the Tractor ........................................59
Assembling the Deck ...........................................60
Deck Caster Wheel Installation ....................................60
Tilt-Up Roller Wheel Installation ...................................60
Installing the Deck ...............................................60
1
Highlighted Information
Throughout this guide you will nd important infor-
mation labeled DANGER, WARNING, CAUTION,
IMPORTANT, and NOTE. Pay particular attention
to the information provided for your safety and the
safety and longevity of your equipment.
When you see the Safety Alert Symbol ( ),
read, understand, and follow the instructions. Fail-
ure to comply with safety instructions may result in
personal injury.
The seriousness or degree of importance of each
type of information is dened as follows:
DANGER
An IMMEDIATE hazard that WILL result in se-
vere personal injury or DEATH, if warning is
ignored and proper safety precautions are not
taken.
WARNING
A POTENTIAL hazard that COULD result in
severe personal injury or DEATH, if warning is
ignored and proper safety precautions are not
taken.
CAUTION
Possible hazards or unsafe practices that MAY
result in MODERATE personal injury or prop-
erty damage, or machine damage, if warning
is ignored and proper safety precautions are
not taken.
IMPORTANT: Identies mechanical information
demanding special attention, since it deals with
the possibility of damaging a part or parts of the
machine.
NOTE: Identies information worthy of special
attention.
Walker Manufacturing cannot predict every po-
tentially dangerous situation. Therefore, items
labeled as such in this manual do not cover all
conceivable situations. Most accidents associated
with the operation or maintenance of a Walker
Mower are caused by disregarding basic safety
precautions or specic warnings. Such accidents,
in most cases, can be prevented by being aware
of the dangers present. Any person using pro-
cedures, tools, or control techniques not recom-
mended by Walker Manufacturing must take full
responsibility for safety.
Walker Manufacturing recommends that any
service requiring special training or tools be per-
formed by an authorized Walker Mower dealer.
General Information
In this section...
Highlighted Information ......................................................................1
Glossary .............................................................................................2
Identifying Number Locations ............................................................. 3
Specications .....................................................................................4
Component Identication .................................................................... 7
General Information R21
2
Glossary
There are many terms that are either unique to
this equipment or that are used as acronyms. The
following terms and their denitions will help while
using this manual:
DECK is the mowing attachment mounted
on the front of the tractor which includes the
carrier frame, deck housing, belt or gear drive
components, and cutter blades.
FORWARD SPEED CONTROL (FSC) controls
the maximum forward speed of the tractor,
functions as a cruise control, and provides a
NEUTRAL-PARK function to stop the mower.
GROUND DRIVE refers to the dual transaxles
which drive the main wheels.
LEFT HAND (LH) refers to the left-hand side
of the tractor when the operator is seated fac-
ing forward in the tractor seat.
POWER TAKE-OFF (PTO) transmits engine
power to run the cutter blades.
RIGHT HAND (RH) refers to the right-hand
side of the tractor when the operator is seated
facing forward in the tractor seat.
SIDE DISCHARGE (SD) discharges mowed
material from the right side of the mower deck.
STEERING LEVERS steer the tractor by con-
trolling the two transaxles.
TRACTOR is the prime mover, including the
engine, drivetrain, operator seat, and controls
to operate the mower.
TRANSAXLE transmits and controls power
from the ground drive belt to the main drive
wheel.
TRANSAXLE LOCKOUT ARMS release the
transaxles to permit freewheeling the tractor.
Servicing of Engine and Transaxle
Components
The detailed servicing and repair of the engine
and transaxles are not covered in this manual.
Only routine maintenance and general service
instructions are provided. For the service of these
components during the limited warranty period, it
is important to nd a local, authorized servicing
agent of the component manufacturer. Any unau-
thorized work done on these components during
the warranty period may void the warranty. If
you have any diculty nding an authorized outlet
or obtaining warranty service, please contact our
Service Department for assistance:
Walker Manufacturing Company
5925 E. Harmony Road
Fort Collins, CO 80528
1-970-221-5614
www.walker.com
Service manuals are available for each of these
components from their respective manufacturers
as follows:
Kohler Engines Kohler Company
Kohler, WI 53044
800-544-2444
www.kohlerengines.com
Transaxle Hydro-Gear
1411 South Hamilton St.
Sullivan, IL 61951
877-728-7410
www.hydro-gear.com
R21 General Information
3
Identifying Number Locations
The tractor serial number plate is axed to the
tractor chassis underneath the seat panel. The
mower deck serial number plate is axed along-
side the angle iron framing on the left beside the
belt cover. The engine serial number is on right
side of the engine. Model and serial numbers
are helpful when obtaining replacement parts and
maintenance assistance. For ready reference,
please record these numbers in the space pro-
vided.
Serial Number
Tractor Serial Number Location
Serial Number
Mower Deck Serial Number Location
Serial Number
Engine Serial Number Location
Tractor and Deck Identiers
Tractor Model No. ______________________
Tractor Serial No. ______________________
Deck Serial No. ______________________
Engine Model No. ______________________
Engine Serial No. ______________________
Date of Purchase ______________________
General Information R21
4
Specications
DIMENSIONS
Length in. (cm)
Tractor Wheel Base 39 (99)
Tractor with Tilted 42" Deck 74 (188)
Tractor with 42" Deck 93 (236)
Width in. (cm)
Tractor Only (Outside Tire) 39 (99)
Tractor with 42" Deck (with Dis-
charge Shield Raised)
43 (109)
Tractor with 48" Deck (with Dis-
charge Shield Raised)
49 (124)
Height in. (cm)
Tractor 42 (107)
Weight lb (kg)
Tractor with 42" Deck 575 (261)
Tractor with 48" Deck 593 (269)
MOWER DECK
Available Cut Width 42 or 48 in. (107 cm or 122 cm)
Cutting Height 1.5 to 4 in. (4 to 10 cm) in 1/2 in. (1 cm) Increments
Deck Suspension Independent Torsion-Flex Frame with Caster Wheels and
Counterweight Springs
FRAME/BODY CONSTRUCTION
Frame and Body All Welded Unitized Steel Chassis, 14 Gauge Steel
Deck 11 Gauge Steel
SEAT Contour-Molded, with Nylon Backed Vinyl Cover and Integral
Foam Cushion
TIRE SIZE
Deck Caster 8 x 3.00-4 (Semi-Pneumatic)
Drive 18 x 8.50-10 (Pneumatic 4-Ply, Low-Prole)
Tailwheel 13 x 6.50-6 (Pneumatic 4-Ply)
TIRE PRESSURE PSI (KPA)
Drive 15 (103)
Tailwheel 20 (137)
R21 General Information
5
Specications
ENGINE
Manufacturer/Model Kohler KT620
Displacement cu. in. (cc) 40.3 (660)
Max. Power HP (kW) 21 (15.7) @ 3600 RPM
Governed RPM 3600
Max. Torque lb
·ft (N·m)
35.9 (48.7)
Idle RPM 1750
Spark Plug Type Champion® type RC12YC (or equivalent)
Spark Plug Gap in. (mm) .030 (0.76)
Crankcase Capacity qt (L) 2.0 (1.9)
Crankcase Lubricant API SJ or Higher Grade Oil Only with 10W-30 Viscosity Above 0° F
(-18° C), or 5W-30 Viscosity Below 32° F (0° C)
Oil Filter Kohler P/N 12 050 01-S
Fuel Tank Capacity gal (L) 3 (11.4)
Fuel Automotive Grade Unleaded Gasoline (87 Octane Minimum,
10% Ethanol Maximum)
Cooling System Air-Cooled
Air Cleaner Engine Mounted (Kohler)
Kohler P/N 16 083 04-S (Filter), 16 083 05-S (Precleaner)
ELECTRICAL SYSTEM
Battery 12 Volt, 300 CCA (Interstate SP-35)
Charging System Flywheel Alternator
Charging Output 18 Amp DC (Regulated)
System Polarity Negative Ground
Ignition Electronic Capacitive Discharge
Starter 12 Volt Electric, Key and Solenoid Operated
Interlock Switches Ignition Lockout by Seat Switch, Transmission Neutral, Blade
Clutch, Parking Brake, and Deck Arm Lock
Circuit Breaker(s) Two Fuses (5A)
Auto Reset (30A)
BLADE DRIVE
PTO Single belt
Blade Drive Clutch and Brake Electric Clutch [Stops Blades within Five (5) Seconds of Disengage-
ment]
General Information R21
6
Specications
DRIVE BELTS
Ground Drive Belt Walker P/N 1250
Blade Drive Belt Walker P/N 1731 (48" Deck)
Walker P/N 1731-1 (42" Deck)
TRANSMISSION
Manufacturer/Model Dual, Independent Hydro-Gear® ZT-2200 EZT Integrated Transax-
les
Steering Hand Lever Control / Individual Wheel
Forward Speed Control Precision Friction Lock Lever, Cruise Control, with
Neutral-Park Position
Service Brake Dynamic Braking Through Transaxles
Parking Brake Mechanical Cog Lock for each Transaxle (Single Lever Control)
Neutral Transmission Release by Manual Dump Valve
Final Drive Transaxle Direct to Drive Wheel
Transmission Cooling Cooling Fan Mounted on Drive Pulley
Transmission Fluid Factory Serviced and Sealed (No Maintenance)
GROUND TRAVEL SPEED
Forward MPH (km/h)
Reverse MPH (km/h)
0-6 (0-10) Innitely Variable
0-6 (0-10) Innitely Variable
NOTE: The manufacturer reserves the right to make changes in specications shown herein at any time
without notice or obligation. The specications listed are for a standard conguration tractor, and may
change with the addition of optional equipment.
R21 General Information
7
Front View and Right Side View
Component Identication
This section identies the main features of the R21. Control features are identied and explained in the sec-
tion “Operator Controls” on page 19.
Deck Lift
Handle
Counterweight
Spring
Deck
Caster Wheels
Tilt Bar
Socket
Deck Tilt Bar
Counterweight
Spring
Tilt-Up
Link
Deck Belt
Cover
Tilt-Up
Lock Hole
Footrest Lift
Latch
Side
Discharge
Shield
Drive Belt Cover
FSC
Friction
Adjustment
Carrier
Frame
Muer
Guard
Oil Dipstick
and Fill
General Information R21
8
Rear View and Left Side View
Tailwheel Fork
and Wheel
Footrests
Tailpipe
Tilt-Up Lock
Hole
Left Hand
Drive Wheel
LH
Transaxle
Spark Plug
Access Hole
Tilt-up Link
LH Step /
Foot Guard
Deck Support
Pins
R21 General Information
9
Top View (Engine Compartment)
30 Amp Circuit
Breaker (Not Visible)
RH
Transaxle
Fan
Spark Plug
(Not Visible)
In-line
Fuel Filter
Fuel Tank
and Cap
Fuel Pump
Engine Air
Cleaner
Spark Plug
(Not Visible)
Negative (-)
Battery
Cable
Positive (+)
Battery
Cable
Muer Brace
Heat Shield /
Fender
Muer Guard
5 Amp Fuses
(Two)
Seat Panel
Fuel Gauge
Blade Belt
RH
Transaxle
Maximum Forward
Speed Adjustment
Screw
Muer Brace
10
The Walker Rider Lawnmower has been designed
with many safety features to protect the opera-
tor from personal harm or injury. However, it is
necessary for the operator to use safe operating
procedures at all times.
If you have any questions concerning setup, oper-
ation, maintenance, or safety, please contact your
authorized Walker Mower dealer or call Walker
Manufacturing Company at (970) 221-5614.
CAUTION
Failure to follow safety instructions contained
in this manual may result in personal injury or
damage to equipment or property.
Safety Before Operating
Read and understand the contents of this
Operators Manual and the machines safety
decals before starting and operating the
machine. Become thoroughly familiar with all
machine controls and how to stop the machine
and disengage the controls quickly. Replace-
ment Operator’s Manuals are available for
download at http://www.walker.com.
Never allow children to operate rider mow-
er. Do not allow adults to operate without
proper instruction.
Clear the area to be mowed of any foreign
objects which may be picked up and thrown
by cutter blades. Pick up all sticks, stones,
wire, and any other debris.
Do not mow with bystanders in the area.
Keep everyone, especially children and pets,
a safe distance away from the area being
mowed.
Always wear substantial protective foot-
wear. Do not operate the machine barefoot or
wearing sandals, sneakers, tennis shoes, or
similar lightweight footwear.
Always wear adequate protective clothing
and safety gear. Do not wear loose tting
clothing that could get caught in moving parts.
Do not operate this machine while wearing
shorts; always wear long pants. Always wear
safety goggles or safety glasses when operat-
ing this mower. Wearing safety shoes and
a helmet is advisable and required by some
local ordinances and insurance regulations.
Operator hearing protection is recommend-
ed. Prolonged exposure to loud noise can
cause impairment or loss of hearing. Wear
a suitable hearing protective device, such as
earmus or earplugs.
Do not wear headphones or listen to music
while mowing. Safe operation of the mower
requires you to give full attention and to be
able to hear clearly.
Keep all protective shields and safety de-
vices in place. If a protective shield, safety
device, or decal is damaged, unusable, or
missing, repair or replace it before operating
the machine.
Do not operate the mower if you are
fatigued, sick or under the inuence of
alcohol or drugs.
Safety Instructions
In This Section...
Safety Before Operating ................................................................... 10
Safety During Operation ...................................................................11
Safety During Maintenance ..............................................................13
Safety, Control, and Instruction Decals ............................................14
R21 Safety Instructions
11
Operators of advanced age are more likely
to be involved in a mowing related acci-
dent. Please evaluate the abilities of each
operator to make sure they can safely perform
the duties required with running this machine.
Do not operate the machine without the
safety switches functioning properly.
These switches are designed to keep the
operator safe. Regularly check to ensure the
switches are operating as designed. This
information is provided in the Maintenance
section “Check Safety Switch System” on
page 41. If a safety switch is not function-
ing properly, do not use the mower until it can
be repaired by a Walker Dealer.
DANGER
Handle gasoline with care. Gasoline is highly
ammable and its vapors are explosive. Use
safe refueling procedures:
DO NOT ll fuel tank with the engine run-
ning.
If the engine is hot, allow to cool before
refueling.
Use an approved fuel container.
Fuel the mower outdoors.
DO NOT smoke while refueling. Keep
matches, cigarettes, cigars, pipes, open
ames, or sparks away from the fuel tank
and fuel container.
Avoid spilling fuel; use a funnel or spout.
DO NOT overll the fuel tank; ll up to the
bottom of the ll tube.
The electrical system battery contains sulfuric
acid. Avoid any contact with skin, eyes, and
clothing. Keep the battery and acid out of
reach of children.
WARNING
This product can expose you to chemicals in-
cluding Di-(2-ethylhexyl) phthalate which is
known to the State of California to cause can-
cer, and Di-(2-ethylhexyl) phthalate, which is
known to the State of California to cause birth
defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov.
Safety During Operation
Operate the mower only in daylight or in
good articial light with good visibility of the
area being mowed.
Sit on the seat when starting the engine
and operating the machine. Keep feet on
the deck footrests at all times when the tractor
is moving and/or mower blades are operating.
Never operate the tractor without a deck or
imple ment installed.
For a beginning operator, learn to steer
(maneuver) the tractor with a slow engine
speed before attempting any mowing oper-
ation. Be aware that, with the front mounted
mower conguration, the back of the tractor
swings to the outside during turns.
For an emergency stop: remember the
forward motion of the tractor can always be
stopped by pulling the Forward Speed Control
(FSC) into the NEUTRAL-PARK position.
NOTE: The emergency stop procedure is
exactly the same procedure used to normally
stop and park the machine.
In the event that you lose control of the
machine (such as the transmission drive belt
breaks during operation, and the machine
starts to freewheel down a slope), you can
maintain control by immediately (1) Releas-
ing the steering levers and simultaneously (2)
Moving the FSC to the NEUTRAL-PARK posi-
tion. When the machine is stopped or moving
slowly, engage the parking brake.
Safety Instructions R21
12
Never attempt to disable or mow without
the safety switches functioning properly.
These switches are designed to keep the
operator safe. Regularly check to ensure the
switches are operating as designed. This
information is provided in the Maintenance
section “Check Safety Switch System” on
page 41. If a safety switch is not functioning
properly, do not use the mower until it can be
repaired by a Walker Dealer.
Do not run the engine in a conned area
without adequate ventilation. Exhaust
fumes are hazardous and can be deadly.
Do not carry passengers - maximum seating
capacity is one (1) person.
Watch for holes, rocks, and roots in the ter-
rain and for other hidden hazards. When
mowing tall grass, mow higher than desired to
expose any hidden obstacles. Then, clean the
area and mow to the desired height.
Avoid sudden starts or stops.
Before backing the machine up, look to the
rear to be sure no one is behind the ma-
chine. Watch carefully for trac when cross-
ing or working near roadways.
When moving forward, do not suddenly put
the tractor in reverse by rapidly pulling on
the steering levers, especially when going
downhill, as this can lift the tractor tail wheel
o the ground and set up a bucking motion
due to operator overcontrol. If bucking does
occur, immediately stop the bucking action by
pulling the Forward Speed Control (FSC) lever
into the NEUTRAL-PARK position.
Disengage the blade drive when transport-
ing the machine across drives, sidewalks,
etc.
Never attempt to make any adjustments
while the engine is running, except where
specically instructed to do so.
Never raise the mower deck while blades
are rotating.
DANGER
Do not mow or dump grass within 5 feet (1.5
meters) of an embankment, retaining wall with
drop o, drainage ditch, water, or other haz-
ard.
The maximum recommended slope oper-
ating angle is 15 degrees or 27% grade.
When operating the machine on a slope:
Reduce speed and use caution to start,
stop, and maneuver.
Avoid sharp turns or sudden changes in
direction to prevent tipping or loss of con-
trol of the machine.
Do not operate the machine on a slope
greater than 15 degrees.
DANGER
Do not mow around overhanging tree branch-
es or bushes at the same height as the opera-
tor’s torso and head where inadvertent contact
may cause injury.
Never adjust cutting height with the engine
running. Before adjusting cutting height or
servicing, disengage the blade clutch (PTO),
engage parking brake, stop the engine, and
remove the ignition key. Wait for all move-
ment to stop before getting o the seat.
NOTE: A blade brake should normally stop
drive line rotation within ve (5) seconds of
disengaging the PTO clutch.
Do not operate the mower with the grass
deector shield removed from the deck.
Keep the deector shield in the lowest pos-
sible position when mowing.
Do not move tractor with the deck in tilt-up
position.
R21 Safety Instructions
13
In case of a clogged or plugged mower
deck:
1. Disengage the blade clutch (PTO), engage
the parking brake, and turn the engine o
and remove the ignition key before leaving
the seat.
2. Listen to make sure all moving parts have
stopped before attempting to lift and visu-
ally inspect the deck.
3. Never place hands under the deck. Use
a stick or similar tool to remove clogged
material.
If the cutting blades strike a solid object
or the machine begins to vibrate abnor-
mally, immediately disengage the blade clutch
(PTO), stop the engine, and wait for all moving
parts to stop. To prevent accidental starting,
disconnect the spark plug wires. Thoroughly
inspect the mower and repair any damage
before restarting the engine and operating the
mower. Make sure cutter blades are in good
condition and blade bolts are torqued to 70
lb·ft (95 N·m).
Do not touch the engine or muer while
the engine is running or immediately after
stop ping the engine. These areas may be
hot enough to cause serious burns.
When leaving the machine unattended,
disen gage the blade clutch (PTO), engage
parking brake, stop the engine, and remove
the ignition key.
When using a ramp to load or unload the
mower, use extreme caution. Avoid sudden
acceleration and do not exceed a 15 degree
angle incline.
Only use a full-width ramp which helps
prevent the mower from tipping and reduces
the risk of a wheel going o the ramp. Do not
use an individual ramps for each side of the
mower.
Safety During Maintenance
To prevent accidental starting of the engine
when servicing or adjusting the machine,
remove the key from the ignition switch and
disconnect the spark plug wires.
Keep the engine free of grass, leaves,
excessive grease, and dirt to reduce re
hazards.
Keep all nuts, bolts, and screws tight to
ensure the machine is in a safe, working
condition. Check the blade mounting bolts
frequently, mak ing sure they are tight.
Perform only maintenance instructions de-
scribed in this manual. Unauthorized main-
tenance operations or machine modications
may result in unsafe operating conditions.
If the engine must be running to perform a
main tenance adjustment, keep hands, feet,
and clothing away from moving parts. Do
not wear jewelry or loose clothing.
Always use the proper engine service man-
ual when working on the engine. Unauthor-
ized maintenance operations or modications
to the engine may result in unsafe operating
conditions.
IMPORTANT: Altering the equipment or en-
gine in any manner which adversely aects its
operation, perfor mance, durability, or use will
VOID the warranty and may cause hazardous
conditions.
Never attempt to disconnect any safety de-
vices or defeat the purpose of these safety
devices.
Do not change the engine governor set-
tings or overspeed the engine. The gover-
nor has been factory-set for maximum-safe
engine operating speed.
Use genuine factory replacement parts.
Sub stitute parts may result in product malfunc-
tion and possible injury to the operator and/or
others.
Safety Instructions R21
14
Use care when charging the battery or
per forming maintenance on the battery and
electrical system:
Make sure the battery charger is un-
plugged before connecting or disconnect-
ing cables to the battery.
Charge the battery in a well-ventilated
space, so gases produced while charg-
ing can dissipate. Make sure the battery
vents in the caps are open.
Keep sparks, ames, and smoking materi-
als away from the battery at all times. To
avoid sparks, use care when removing
bat tery cables from posts.
Disconnect both battery cables before un-
plugging any wiring connectors or making
repairs on the electrical system.
IMPORTANT: Keep all applicable manuals
immediately accessible to anyone who may
operate or service this machine.
Safety, Control, and Instruction
Decals
Safety, control, and instruction decals are installed
on the machine. They provide key information to
assist the operator with safely using the machine.
WARNING
If any decals are missing, illegible, or dam-
aged, a replacement should be ordered and
installed before operating the machine. The
decal part numbers are provided below and in
the Parts Manual.
R
R
1600-2
Location: Between Steering Levers
Part Number: 1600-2
Pull Steering Levers back to control direction
of tractor movement.
R21 Safety Instructions
15
2.
3.
1.
Location: LH Fender
Part Number: 8600-53
Part Number: 8600-53 (Continued)
1. Warning – read Operators Manual before
servicing or performing maintenance.
Engage parking brake.
Remove ignition key.
2. Warning Crushing/dismemberment haz-
ard of bystanders.
Do not carry passengers. Always stop
machine if someone enters the area.
Always be aware of what is behind the
machine before backing up. Do not mow
in reverse unless absolutely necessary.
Always look down and behind before
and while backing up.
3. Parking Brake
Must be engaged to start the engine. Move
the lever forward and to the right to engage.
Safety Instructions R21
16
3.
2.
5.
7.
6.
1.
4.
Location: RH Fender
Part Number: 8600-52
Part Number: 8600-52 (Continued)
1. Warning – read Operators Manual before
operating the machine.
2. Warning – wear eye and ear protection
when operating the machine.
3. Warning – thrown object hazard.
Keep bystanders away from the machine
when operating.
4. Warning – entanglement hazard.
Keep all guards in place while engine is
running.
5. Forward Speed Control
Move lever forward to increase speed; back
to stop.
6. Warning – roll-over hazard.
Do not operate on slopes greater than 15
degrees. Mow a safe distance of 5 feet (1.5
m) away from drop-os or other hazards.
7. Throttle
Move lever forward to increase engine
speed; back to idle.
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Walker R21 User manual

Category
Lawnmowers
Type
User manual

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