Walker R21 User manual

Brand: Walker

Model: R21

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: 158429

P/N: 1000-1

Foreword

Thank you. . .for purchasing a Walker mower. Every effort 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 affect

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, President

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

Engaging the Blades ...........................................27

Recommendations for Getting Started: ...............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

Long-Term Storage Preparation ..........................49

Mower Preparation for Storage ....................................49

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

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

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

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 dif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.walkermowers.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

Identifying Number Locations

The tractor serial number plate is afxed to the

tractor chassis underneath the seat panel. The

mower deck serial number plate is af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

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

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

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

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

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

Oil Dipstick

and Fill

Tilt-Up

Link

Deck Belt

Cover

Tilt-Up

Lock Hole

Footrest Lift

Latch

Side

Discharge

Shield

Drive Belt Cover

FSC

Friction

Adjustment

Carrier

Frame

General Information R21

Rear View and Left Side View

Tailwheel Fork

and Wheel

Footrests

Tailpipe

Tilt-up Link

Tilt-Up Lock

Hole

Deck Support

Pins

Left Hand

Drive Wheel

Transaxle

Spark Plug

Access Hole

R21 General Information

Top View (Engine Compartment)

30 Amp Circuit

Breaker (Not Visible)

Negative (-)

Battery

Cable

Positive (+)

Battery

Cable

Transaxle

Fan

Spark Plug

(Not Visible)

Fuel Gauge

In-line

Fuel Filter

Fuel Tank

and Cap

Seat Panel

5 Amp Fuses

(Two)

Blade Belt

Transaxle

Fuel Pump

Engine Air

Cleaner

Spark Plug

(Not Visible)

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

Operator’s 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

earmuffs 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

● 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 repro-ductive 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

● 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 traf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

off 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 off, 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 off 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

● In case of a clogged or plugged mower

deck:

1. Disengage the blade clutch (PTO), engage

the parking brake, and turn the engine off

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 muf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 off 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 affects 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

● 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.

1600-2

Location: Between Steering Levers

Part Number: 1600-2

Pull Steering Levers back to control direction

of tractor movement

R21 Safety Instructions

Location: LH Fender

Part Number: 8600-53

Part Number: 8600-53 (Continued)

1. Warning – read Operator’s 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

Location: RH Fender

Part Number: 8600-52

Part Number: 8600-52 (Continued)

1. Warning – read Operator’s 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-offs or other hazards.

7. Throttle

Move lever forward to increase engine

speed; back to idle.

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Walker R21 User manual

Brand: Walker

Model: R21

Category: Lawnmowers

Type: User manual

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Walker R21 User manual

Walker R21 User manual

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