Walker H37i 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: 162654
P/N 2000-33

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 custom
ers. 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. Before
you operate your new mower, please read this entire manual. Some of the information is crucial for
prop er 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 operator or others. If any
thing 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 H37i with the Briggs & Stratton Vanguard (37 HP) Electronic Fuel
Injection (EFI) 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 operate
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 pro
duced 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 obliga
tion relative to previously manufactured products.
Sincerely,
WALKER MANUFACTURING COMPANY
Bob Walker, Chairman

Table of Contents
General Information ________________ 1
HIGHLIGHTED INFORMATION _____________ 1
GLOSSARY ____________________________ 1
IDENTIFYING NUMBER LOCATIONS ________ 1
ENGINE SERIAL NUMBER LOCATION_______ 2
SERVICING OF ENGINE AND
DRIVETRAIN COMPONENTS ______________ 2
Specications________________________ 3
ENGINE________________________________ 3
ELECTRICAL SYSTEM ___________________ 3
TRANSMISSION _________________________ 3
BLADE DRIVE __________________________ 4
TIRE SIZE ______________________________ 4
TIRE PRESSURE ________________________ 4
DRIVE BELTS ___________________________ 4
SEAT __________________________________ 4
FRAME/BODY CONSTRUCTION____________ 4
DIMENSIONS (Tractor and Mower) __________ 5
DECK CHART ___________________________ 5
Component Identication ___________ 6
Safety Instructions __________________ 9
BEFORE OPERATING ____________________ 9
OPERATING ___________________________ 11
MAINTENANCE ________________________ 13
SAFETY, CONTROL,
AND INSTRUCTION DECALS _____________ 14
Assembly Instructions______________ 18
SETUP INSTRUCTIONS__________________ 18
Tire Installation (Tractor) _______________ 18
Battery Service _______________________ 18
Wet Battery Service __________________ 18
Dry Battery Service___________________ 19
Battery Charging_____________________ 19
Battery Installation ___________________ 20
Mower Deck Assembly_________________ 20
Deck Caster Wheels Installation _________ 20
Deck Discharge Deector
Shield Installation ____________________ 20
PTO Shaft Guard Installation ___________ 21
Tilt-Up Roller Wheel Installation _________ 21
Mower Deck Installation on Tractor_______ 21
Deck Installation _____________________ 21
Deck Leveling _______________________ 23
Measuring Deck Levelness ____________ 23
Deck Leveling Procedure _____________ 24
PREOPERATING CHECKLIST_____________ 25
Operating Instructions _____________ 28
CONTROL IDENTIFICATION,
LOCATION, AND FUNCTION _____________ 28
Ignition Switch _______________________ 28
Engine Throttle _______________________ 29
Body Latch __________________________ 29
Forward Speed Control (FSC) ___________ 29
Steering Levers_______________________ 29
Blade Clutch (PTO)____________________ 29
Parking Brake ________________________ 30
Oil Pressure Warning Light/Horn ________ 31
Engine Service Light __________________ 31
Over Temperature Warning Light/Horn____ 31
Transaxle Lockout Arms _______________ 32
Circuit Breaker _______________________ 32
Hourmeter ___________________________ 32
Roll-Over Protection
System (ROPS, Optional)_______________ 33
Suspension Seat______________________ 34
STARTING THE ENGINE _________________ 37
ADJUSTING GROUND
SPEED AND STEERING__________________ 37
ENGAGING THE BLADE DRIVE ___________ 40
STOPPING THE MACHINE _______________ 40
FUEL TANK SELECTOR VALVE ___________ 41
ADJUSTABLE FOOT RESTS ______________ 41
ADJUSTING CUTTING HEIGHT____________ 42
Transport Position ____________________ 42
TRANSAXLE LOCKOUT _________________ 42
RECOMMENDATIONS FOR MOWING ______ 43
RECOMMENDATIONS FOR TILT-UP DECK
OPERATION/TRANSPORT _______________ 45

Table of Contents
Maintenance Instructions __________ 46
MAINTENANCE SCHEDULE CHART _______ 46
IMPORTANT TIPS FOR CARE OF THE
BRIGGS & STRATTON ENGINE___________ 47
Fuel System _________________________ 47
Starting/Stopping _____________________ 47
Cooling System ______________________ 47
Air Cleaner System____________________ 47
Oil__________________________________ 47
LUBRICATION _________________________ 48
Engine Oil ___________________________ 48
Engine Break-In Oil___________________ 48
Checking Engine Crankcase Oil Level ____ 48
Changing Engine Crankcase Oil/Oil Filter__ 49
Mower Deck Spindle Lubrication ________ 49
DR52, DS61 or DR64 Mower
Deck Lubrication _____________________ 49
Check Transaxle Fluid Level ____________ 50
Transaxle Oil and Filter Change _________ 50
Grease Fitting and Oil Point Lubrication __ 51
CLEANING ____________________________ 54
Engine Air Cleaner System _____________ 54
Briggs & Stratton Air Cleaner ___________ 54
Engine Cooling System ________________ 56
Cooling Air Intake Screen ______________ 56
Cylinder Head Cooling Fins ____________ 56
Grass Buildup in Mower Deck Housing ___ 57
Transaxle Housing ____________________ 59
CHECKING/SERVICING__________________ 60
Security of Air Cleaner System __________ 60
Battery______________________________ 60
Electrolyte Level _____________________ 60
Cleaning the Terminals ________________ 61
Charging the Battery__________________ 61
Tire Pressure_________________________ 61
Wheel Nut Torque _____________________ 61
Sharpen Mower Blades ________________ 61
Drive Belts___________________________ 62
Spark Plugs__________________________ 63
Ignition Wires ________________________ 63
Fuel Lines and Clamps_________________ 63
Engine Starter _______________________ 63
Transmission Control Setting ___________ 63
Neutral-Park ________________________ 63
Straight Ground Tracking ______________ 63
Blade Brake Action____________________ 63
PTO U-Joints ________________________ 63
Safety Switch System__________________ 64
Forward Speed Control Friction Lock_____ 64
REPLACING/REPAIRING_________________ 65
Drive Belts ____________________________ 65
Engine/PTO Belt _____________________ 66
Ground Drive Belt ____________________ 67
Deck Drive Belt ______________________ 68
Fuel Filter ___________________________ 69
Mower Blades ________________________ 69
ADJUSTMENTS ________________________ 71
Transmission Control__________________ 71
Steering Lever Position Adjustment ______ 71
Steering Handle Adjustment ____________ 71
Neutral Function Adjustment____________ 72
Full Forward Speed Adjustment _________ 73
Straight Tracking Adjustment ___________ 73
FSC Neutral Switch Adjustment _________ 73
Forward Speed Control
Friction Adjustment ___________________ 74
Blade Clutch (PTO)____________________ 75
Clutch Engagement/Belt Tension ________ 75
Clutch Disengagement/Brake Action _____ 76
Idler Pulley Maximum Travel Adjustment __ 76
Blade Brake Band Adjustment __________ 77
MAINTENANCE AND SERVICE
RECORD SHEET_______________________ 78
Warranty _____________________ 79

General Information
1
HIGHLIGHTED INFORMATION
Walker Manufacturing recommends that any ser vice
requiring special training or tools be performed by
an authorized Walker Mower dealer. There are sev
eral general practices to be aware of in the area of
safety. Most accidents associated with the opera
tion 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.
Information of special importance has been high
lighted in bold type in this manual. Refer to Safety
Instructions for the meanings of DANGER, WARN-
ING, CAUTION, IMPORTANT, and NOTE.
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, blade spindles, and cutter
blades.
●ELECTRONIC CONTROL UNIT (ECU) controls
engine functions such as spark timing, fuel/air
ratio, etc.
●FORWARD SPEED CONTROL (FSC) controls
the maximum forward speed of the tractor;
functioning as a cruise control.
●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 facing
forward in the tractor seat.
●POWER TAKE-OFF (PTO) transmits engine
power to run the cutter blades.
●REAR DISCHARGE (RD) discharges mowed
material from the back of the mower deck.
●RIGHT HAND (RH) refers to the righthand side
of the tractor when the operator is seated facing
forward in the tractor seat.
●ROLL-OVER PROTECTION SYSTEM (ROPS)
o󰀨ers enhanced operator protection in the event
of a rollover type accident.
●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.
IDENTIFYING NUMBER LOCATIONS
The tractor serial number plate is a󰀩xed to the trac
tor body just below the left rear corner of the seat.
The mower deck serial number plate is a󰀩xed
alongside the angle iron framing on the LH side of
the LH mower blade drive. Model and serial num
bers are helpful when obtaining replacement parts
and maintenance assistance. For ready reference,
please record these numbers in the space provided.
Fill In By Purchaser
Tractor Model No. ______________________
Tractor Serial No. ______________________
Deck Serial No. ______________________
Engine Model No. ______________________
Engine Serial No. ______________________
Date of Purchase ______________________

General Information
2
Serial Number
Tractor Serial Number Location
Serial Number
Mower Deck Serial Number Location
ENGINE SERIAL NUMBER LOCATION
Refer to the engine manual that accompanies this
manual or photo below for the location of the engine
serial number.
Serial Number
Engine Serial Number Location
SERVICING OF ENGINE AND DRIVETRAIN
COMPONENTS
The detailed servicing and repair of the engine and
transaxles are not covered in this manual. Only rou
tine 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 com
ponent manufacturer. Any unauthorized 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 Depart
ment 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:
Briggs & Stratton Briggs & Stratton
Engines 8002333723
(24hour hotline in
USA & Canada)
www.briggsandstratton.com
Transaxles Hydro-Gear
1411 South Hamilton St.
Sullivan, IL 61951
8777287410
www.hydrogear.com

Specications
3
MODEL H37i
ENGINE
Manufacturer/Model Briggs & Stratton Vanguard, 2 Cyl. OHV, Gasoline (AirCooled),
Electronic Fuel Injection (EFI)
Displacement cu. in. (cc) 60.6 (993)
Max. Power HP (kW) 37.0 (28.3) @ 3600 RPM
Governed RPM 3600
Max. Torque lb·ft (N·m)54 (73.2) @ 3000 RPM
Idle RPM 1600
Spark Plug Type Champion® XC92YC
Spark Plug Gap in. (mm) .030 (0.76)
Crankcase Capacity qt (L) 2.4 (2.3)
Crankcase Lubricant Synthetic or API SF or Higher Grade Oil Only with 10W30 Viscosity,
0º to 100º F (18º to 38º C), or 5W30 Viscosity Above 100º F (38º C),
or Below 40º F (4º C)
Oil Filter Briggs & Stratton P/N 842921
Cooling System AirCooled
Fuel Tank Capacity gal (L) 9.4 (35.6), Two Independent 4.7 Gallon Tanks with Selector Valve
Fuel Regular Grade Unleaded Gasoline
(87 Octane Minimum, 10% Ethanol Maximum)
Air Cleaner Engine Mounted (Briggs & Stratton)
(Briggs & Stratton P/N 841497 Primary/P/N 821136 Safety Filter)
ELECTRICAL SYSTEM
Battery 12 Volt, 350 CCA (Interstate SP40)
Charging System Flywheel Alternator
Charging Output 50 Amp DC (Regulated)
System Polarity Negative Ground
Ignition Electronic Capacitive Discharge
Starter 12 Volt Electric RingGear Type, Solenoid Shift
Interlock Switches Ignition Lockout by Seat Switch, Transmission Neutral,
Blade Clutch, and Parking Brake
Circuit Breakers Manual Reset (20A)
Auto Reset (30A)
TRANSMISSION
Manufacturer/Model Dual, Independent HydroGear® ZT3400 Integrated Transaxles
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

Specications
4
MODEL H37i
TRANSMISSION (continued)
Parking Brake Internal Mechanical Cog Lock for each Transaxle
(Single Lever Control)
Neutral Transmission Release by Manual Dump Valve
Final Drive Direct Drive Axle from Transaxle
Transmission Fluid
Factory Service 20W50 MultiViscosity Motor Oil (Minimum SL Grade Oil)
Transmission Oil Capacity  oz (L) 77 (2.3)
Transmission Cooling Cooling Fan Mounted on Drive Pulley
Oil Filter HydroGear® P/N 52114 (Walker P/N 20266)
Ground Travel Speed
Forward MPH (km/h)
Reverse MPH (km/h)
010 (016) Innitely Variable
05 (08) Innitely Variable
BLADE DRIVE
PTO Shaft Quick Disconnect Sliding Spline Shaft with Two (2) HighSpeed
UJoints
Blade Drive Clutch and Brake Manual Belt Tightener Clutch and Band Brake
[Stops Blades within Five (5) Seconds of Disengagement]
TIRE SIZE
Deck Caster Wheel 13 x 4.506 (Pneumatic 6Ply)
Drive 22 x 10.5012 (4Ply LowProle)
Tailwheel 13 x 4.506 (Pneumatic 6Ply)
TIRE PRESSURE PSI (KPA)
Deck Caster Wheel 20 (137)
Drive 15 (103)
Tailwheel 20 (137)
DRIVE BELTS
Engine PTO Walker P/N 2230 (Set of 3)
Ground Drive Walker P/N 22481
SEAT Full Spring Suspension with Dampening and Adjustments for Back
Angle, Lumbar Support, and Operator Weight. Standard with Ad
justable/Retractable Armrests.
FRAME/BODY CONSTRUCTION
Frame All Welded Unitized Steel Chassis
Body 14 Gauge Steel
Deck 11 Gauge Steel

Specications
5
MODEL H37i
DIMENSIONS (Tractor and Mower)
Length in. (cm)
Tractor Only 69 (175)
Tractor Wheel Base 45 (115)
Tractor with Tilted Deck
(Approximate)
87.75 (223)
Tractor with 64" Rear Discharge
Deck (DR643)
107.75 (274)
Width in. (cm)
Tractor Only (Outside Tire) 46.5 (118)
Tractor with 64" Rear Discharge
Deck (DR643)
66 (168)
Tread Width 36.5 (93)
Height in. (cm)
Tractor 46.5 (118)
With ROPS (Optional) 66.25 (168)
With ROPS (Optional) Lowered 51.25 (130)
Weight lb (kg)
Tractor Only 778 (353)
Tractor with 64" Rear Discharge
Deck (DR643)
1215 (551)
DECK DR52 DR64 DS61
Type BeltDriven,
Rear Discharge
BeltDriven,
Rear Discharge
BeltDriven,
Side Discharge
Cutting Width in. (cm) 52 (132) 64 (163) 61 (155)
Cutting Height in. (cm) 1.5 to 5 (3.8 to 12.7)
Height Adjustment in. (cm) 1/4 (1) Increments, 15 Positions
Blade Length in. (cm) 18.4 (47) 22.2 (56) 20.5 (52)
Number of Blades 3
Direction of Rotation
(Viewed from top of deck)
Clockwise
Deck Suspension TorsionFlex Frame with Caster Wheels and Counterweight Springs
Maximum Blade RPM 3840 3200 3330
Maximum Blade Tip Speed
ft/min (m/min)
18500 (5640) 18500 (5640) 17870 (5460)
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.

Component Identication
6
Front View and Right Side View
NOTE: Control Identication
shown in Operating
Instructions section.
Body TiltUp
Latch
Deck Height
Lift Chain
Deck
TiltUp Bar
Deck Support Arm
(Not Visible)
Adjustable
Footrests
Forward Speed
Control (FSC)
Friction
Adjustment
Deck Lift Foot Pedal
(Raises Deck)
Cutting Height Release Lever
(Cutting Height Adjustment)
Deck Support Arm
TiltUp Latch
Deck TiltUp
Socket
TiltUp
Hook
Deck
Caster Wheels
Counterweight Springs and
Protective Covers

Component Identication
7
Rear View and Left Side View
Adjustable
Footrest
Left Hand
Drive Wheel
Tail Wheel
Fuel Pickup
Line
Fuel Tank
and Cap
Cylinder Head Cooling
Fins
Mu󰀪er
(Not Visible)
Fuel Gauge Oil Fill Dipstick Engine Air
Cleaner
Spread Axle
(Tail Wheel)
Tailpipe
Mu󰀪er Heat
Shield
Body Lift
Handle

Component Identication
8
Top View (Body Raised)
Mu󰀪er Heat
Shield
Air Intake
Cover
RH Transmission
Control Rod
Steering Lever
Spring / Dampeners
Transaxle Oil
Expansion
Reservoir
LH Transaxle
PTO Clutch
Lever
LH Transmission
Control Rod
Air Cleaner
Cover
Battery
Fuel Gauge
Roll Over Valve
Air Cleaner
Oxygen
Sensor
Oil Filter
(Not Visible)
Electronic Control
Unit (ECU)
(Under Cover)
Oil Fill
(Not Visible)
Parking Brake
Safety Switch
Dipstick
Fuel Tank Cap
Fuel Tank
Fuel Tank
Selector Valve
EVAP Line
Fuel Filter
Fuel Pickup Line
Fuel Pump
(Low Pressure)
RH Transaxle
Clutch
Linkage
RH Transaxle
Lockout Arm
Parking Brake
Linkage
Parking Brake
Lever
LH Transaxle
Lockout Arm

Safety Instructions - Before Operating
9
Pay particular attention to any information labeled
DANGER, WARNING, CAUTION, IMPORTANT,
and NOTE in this manual.
When you see the Safety Alert Symbol ( ), read,
understand, and follow the instructions. Fail ure to
comply with safety instructions may result in per
sonal 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
severe personal injury or DEATH, if warn-
ing is ignored and proper safety precau-
tions are not taken.
WARNING
A POTENTIAL hazard that COULD result in
severe personal injury or DEATH, if warn-
ing is ignored and proper safety precau-
tions are not taken.
CAUTION
Possible hazards or unsafe practices that
MAY result in MODERATE personal injury
or property damage, or machine damage, if
warning is ignored and proper safety pre-
cautions are not taken.
IMPORTANT: Identifies mechanical information
demanding special attention, since it deals with the
possibility of damaging a part or parts of the ma
chine.
NOTE: Identies information worthy of special
attention.
Walker Manufacturing cannot predict every poten
tially dangerous situation. Therefore, items labeled
as such in this manual do not cover all conceivable
situations. Any person using procedures, tools, or
control techniques not recommended by Walker
Manufacturing must take full responsibility for safety.
The Walker Rider Lawnmower has been designed
with many safety features to protect the operator
from personal harm or injury. However, it is neces
sary for the operator to use safe operating proce
dures at all times. Failure to follow safety instruc-
tions contained in this manual may result in
personal injury or damage to equipment or prop-
erty.
If you have any questions concerning setup, opera
tion, maintenance, or safety, please contact your
authorized Walker Mower Dealer or call Walker
Manufacturing Company at (970) 2215614.
BEFORE OPERATING
1. Read and understand the contents of this
Operator’s Manual before starting and oper-
ating the machine. Become thoroughly famil
iar with all machine controls and how to stop the
machine and disengage the controls quickly.
Replacement Operator’s Manuals are available
by sending the Model and Serial Number to:
Walker Manufacturing Company
5925 East Harmony Road
Fort Collins, CO 80528
2. Never allow children to operate rider mower.
Do not allow adults to operate without proper
instruction.
3. 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.
4. Keep everyone, especially children and pets, a
safe distance away from the area being mowed.
Do not mow with bystanders in the area.
5. Do not operate the machine barefoot or wearing
sandals, sneakers, tennis shoes, or similar
light weight footwear. Wear substantial pro-
tective footwear.

Safety Instructions - Before Operating
10
6. Do not wear loose tting clothing that could get
caught in moving parts. Do not operate this ma
chine while wearing shorts; always wear ade-
quate protective clothing, including long
pants. Wearing safety glasses, safety shoes,
and a helmet is advisable and required by some
local ordinances and insurance regulations.
7. Prolonged exposure to loud noise can cause
impairment or loss of hearing. Operator hear-
ing protection is recommended. Wear a suit
able hearing protective device, such as ear
mu󰀨s or earplugs.
8. Keep all protective shields and safety de-
vices in place. If a protective shield, safety
device, or decal is damaged, unusable, or miss
ing, repair or replace it before operating the
machine.
9. Be sure interlock switches are functioning
correctly, so the engine cannot be started un
less the Forward Speed Control lever is in the
NEUTRAL-PARK position, the PTO clutch is in
the DISENGAGED position, and the Parking
Brake is in the ENGAGED position. Also, the
engine should stop if the operator lifts o󰀨 the
seat with any one or more of these controls in
the operating position: (1) Forward Speed Con
trol (FSC) out of NEUTRAL-PARK, (2) PTO
Clutch ENGAGED, or (3) Parking Brake DIS-
ENGAGED.
NOTE: There is a 1/2 second time delay func
tion on the seat switch to avoid engine power
interruption when driving over bumps.
10. Handle gasoline with care. Gasoline is highly
ammable and its vapors are explosive:
a. Use an approved fuel container.
b. Never add fuel to a running engine or hot
engine (allow hot engine to cool several
minutes).
c. Keep matches, cigarettes, cigars, pipes,
open ames, or sparks away from the fuel
tanks and fuel container.
d. Always ll the fuel tank(s) outdoors using
care. Fill to about one inch from the top of
the tank. Use a funnel or spout to prevent
spilling.
e. Replace the machine fuel cap(s) and con
tainer cap securely and clean up any spilled
fuel before starting the engine.
11. Never attempt to make any adjustments
while the engine is running, except where
spe cically instructed to do so.
12. 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
including Di-(2-ethylhexyl) phthalate which
is known to the State of California to cause
cancer, 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 Instructions - Operating
11
WARNING
If Equipped With ROPS:
●Always keep the ROPS roll bar in the up-
right and locked position when operat-
ing.
●Always use the seat belt when the roll
bar is upright.
●Only lower the roll bar when absolutely
necessary for overhead clearance.
●Never use the seat belt when the roll bar
is lowered.
1. Operate the mower only in daylight or in
good articial light with good visibility of the area
being mowed.
2. 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 op-
erate the tractor without a deck or imple-
ment installed.
3. For a beginning operator, learn to steer (ma-
neuver) the tractor with a slow engine speed
before attempting any mowing operation.
Be aware that, with the front mounted mower
conguration, the back of the tractor swings to
the outside during turns.
DANGER
Do not mow around overhanging tree
branches or bushes at the same height as
the operator’s torso and head where inad-
vertent contact may cause injury.
4. Remember, for an emergency stop, the forward
motion of the tractor can always be stopped by
pulling the Forward Speed Control (FSC) into
the NEUTRAL-PARK position.
5. In case the transmission drive belt breaks dur
ing operation, and if the machine is on a slope,
the machine will freewheel down the slope. To
maintain control, immediately (1) Release the
steering levers and simultaneously (2) Move
the FSC to the NEUTRAL-PARK position.
When the machine is stopped or moving slowly,
engage the parking brake.
NOTE: The emergency stop procedure is ex
actly the same procedure as used to normally
stop and park this machine.
6. Disengage the blade clutch, put the FSC in the
NEUTRAL-PARK position, and engage the
Parking Brake before starting the engine (an
ignition interlock switch normally prevents
starting of the machine if these controls are in
the OPERATING position).
7. Do not operate machine if the operator pres-
ence safety switch system is not working.
Verify proper operation by having the operator
lift o󰀨 the seat with the engine running and mov
ing three controls, one at a time; (1) Move the
FSC lever out of the NEUTRAL-PARK position,
(2) Engage the PTO Clutch, and (3) Disengage
the Parking Brake. Moving any of these
controls should stop the engine after a 1/2 sec
ond delay.
8. Do not run the engine in a conned area
without adequate ventilation. Exhaust fumes
are hazardous and can be deadly.
9. Do not carry passengers  maximum seating
capacity is one (1) person.
10. Watch for holes, rocks, and roots in the terrain
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.
11. Avoid sudden starts or stops. Before back
ing the machine up, look to the rear to be sure
no one is behind the machine. Watch carefully
for tra󰀩c when crossing or working near road
ways.

Safety Instructions - Operating
12
12. When moving forward, do not suddenly put the
tractor in reverse by rapidly pulling on the steer
ing 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.
13. Disengage the blade drive when transporting
the machine across drives, sidewalks, etc. Nev-
er raise the mower deck while blades are
rotating.
DANGER
Do not mow or drive the tractor within 5
feet (1.5 meters) of an embankment or re-
taining wall with drop o󰀨.
14. The maximum recommended slope operat-
ing angle is 15 degrees or 27% grade. When
operating the machine on a slope, reduce speed
and use caution to start, stop, and maneuver.
To prevent tipping or loss of control of the ma
chine, avoid sharp turns or sudden changes in
direction. Do not operate the machine on a
slope greater than 15 degrees.
15. 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 re
move the ignition key. Wait for all movement to
stop before getting o󰀨 the seat.
NOTE: The blade/PTO brake should normally
stop drive line rotation within ve (5) seconds of
dis engaging the PTO clutch.
16. For side discharge mower decks, do not oper-
ate with the grass deector shield removed.
Keep the deector in the low est possible posi
tion.
17. When using the tiltup deck, observe the fol-
lowing:
a. Do not move tractor with deck in tiltup
position.
b. Never tilt body forward with deck in tiltup
position.
18. In case of a clogged or plugged mower deck:
a. Disengage the blade clutch (PTO), engage
the parking brake, and turn the engine o󰀨
before leaving the seat.
b. LOOK to make sure blade drive shaft
movement has stopped before trying to un
clog the system.
c. Disconnect the spark plug wires.
d. Never place hands under the deck  use a
stick or similar tool to remove clogged ma
terial.
19. If the cutting blades strike a solid object or the
machine begins to vibrate abnormally, immedi-
ately disengage the blade clutch (PTO), en-
gage the parking brake, stop the engine,
and wait for all moving parts to stop. To pre
vent 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 nuts are
torqued to 60 lb·ft (81 N·m) for geardriven
decks, and blade bolts torqued to 70 lb·ft (95
N·m) for beltdriven decks.
20. 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.
21. When leaving the machine unattended, disen-
gage the blade clutch (PTO), engage the
parking brake, stop the engine, and remove
the key.

Safety Instructions - Maintenance
13
1. To prevent accidental starting of the engine
when servicing or adjusting the machine, re
move the key from the ignition switch and dis
connect the spark plug wires.
2. To reduce re hazards, keep the engine free
of grass, leaves, excessive grease, and dirt.
3. Keep all nuts, bolts, and screws tight to ensure
the machine is in a safe, working condition.
Check the blade mounting bolts frequently,
making sure they are tight.
4. Perform only maintenance instructions de-
scribed in this manual. Unauthorized mainte
nance operations or machine modications
may result in unsafe operating conditions.
5. 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.
6. Always use the proper engine service
manual when working on the engine.
Unauthorized maintenance operations or
modications to the engine may result in unsafe
operating conditions.
7. Altering the equipment or engine in any manner
which adversely a󰀨ects its operation, perfor
mance, durability, or use will VOID the war-
ranty and may cause hazardous conditions.
8. Never attempt to disconnect any safety devices
or defeat the purpose of these safety devices.
9. Do not change the engine governor settings or
overspeed the engine. The governor has been
factoryset for maximumsafe engine operating
speed.
10. Use genuine factory replacement parts.
Sub stitute parts may result in product malfunc
tion and possible injury to the operator and/or
others.
11. Use care when charging the battery or per
forming maintenance on the battery and electri
cal system:
a. Make sure the battery charger is unplugged
before connecting or disconnecting cables
to the battery.
b. Charge the battery in a wellventilated
space, so gases produced while charging
can dissipate. Make sure the battery vents
in the caps are open.
c. 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.
d. Disconnect both battery cables before un
plugging any wiring connectors or making
repairs on the electrical system.
12. Do not attempt to service the engine fuel injec
tion system, which contains high pressure fuel
and may cause injury if mishandled. For ser
vice of the pressurized fuel system, including
the fuel pump, fuel lines, and fuel injectors, con
tact your Walker dealer or authorized
Briggs & Stratton service dealer.
IMPORTANT: Keep all applicable manuals im
mediately accessible to anyone who may oper
ate or service this machine.

Safety Instructions
14
SAFETY, CONTROL, AND INSTRUCTION DECALS
Safety, Control, and Instruction Decals are installed on the machine;
if any are missing, illegible, or damaged, a replacement should be ordered and installed before
putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual.
Location: Deck Carrier Frame
Part Number: 8600-14
8600-14
1.
1. Warning – do not operate the machine with the
deck tilted up.
Location: Chassis Member Behind Transaxles
Part Number: 9804-1
9804-1
1.
1. Neutral Lock
● Lift and move back to engage step to unlock
transmission and allow machine to free
wheel.
Location: Engine
Part Number: 8600-12
8600-12
1.
1. Warning – carbon monoxide (CO) poisoning
hazard.
● CO emitted by a running engine can be deadly.
● Do not operate indoors or in other enclosed
areas.
1. Grease PTO shaft joints every 8 hours.
Location: PTO Guard on Deck
Part Number: 8746-2
Location: Each End of Mower Deck
Part Number: 8600-28
1. Warning – thrown object hazard.
● Keep bystanders away from the machine
when operating.
● Clear lawn of debris before operating.
● Keep any discharge deector in place and in
the lowest position.
2. Warning – rotating mower blades are a cutting/
dismemberment hazard to hands and feet.
● Keep all body parts away from rotating mow
er blades.
● Do not step on end of deck.
1.
8746-2
8600-28
1.
2.
1. Fuel tank selector valve.
Location: Adjacent to Left Fuel Tank
Part Number: 2010-16
1.
Location: Underside of Rear Body, Behind Seat
Part Number: 5855
Location: Deck Carrier Frame
Part Number: 8600-15
1.
1. Warning – lock deck tiltup hinge before operat
ing the machine.
Location: Rear Body Near Mu󰀪er
Part Number: 8600-5
8600-5
1.
1. Warning – hot surface, do not touch.

Safety Instructions
15
SAFETY, CONTROL, AND INSTRUCTION DECALS
Safety, Control, and Instruction Decals are installed on the machine;
if any are missing, illegible, or damaged, a replacement should be ordered and installed before
putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual.
Location: Deck Discharge Shield (DS61)
Part Number: 5848-3
1. Warning – thrown object hazard.
● Always keep the discharge shield in the low
est position when operating.
● Do not remove the discharge shield.
Location: Top of Deck Housing
Part Number: 8653-1
1.
1. Warning – secure deck with straps and engage
parking brake before transporting or trailering
with deck tilted up.
Location: Deck Height Adjuster
Part Number: 2748-2
1. Move pin to desired height of cut.
1.
Location: Flex Coupler Guard in Front of Engine
Part Number: 8600-2
1. Warning – entanglement and cutting/dismem
berment hazards.
● Keep away from rotating shafts, belts, and
other components.
1.
8600-2
Location: Deck Housing Under Footrest
Part Number: 2749-7
1. DR64 deck drive belt routing.
1.
DR64 BELT P/N 2731-5
BELT T WIST
2749-7
Location: Deck Housing Under Footrest
Part Number: 2749-5
1. DR52 deck drive belt routing.
BELT ROUTING
BELT TWIST
BELT TWIST
2749-5
1.
Location: Deck Housing Under Footrest
Part Number: 2749-8
1. DS61 deck drive belt routing.
2749-8
BELT TWIST
BELT TWIST
BELT ROUTING
DS61 BELT P/N 2731-6
1.
1.

Safety Instructions
16
SAFETY, CONTROL, AND INSTRUCTION DECALS
Safety, Control, and Instruction Decals are installed on the machine;
if any are missing, illegible, or damaged, a replacement should be ordered and installed before
putting the machine into operation. The Decal Part Number is listed below and in the Parts Manual.
Location: Right Fender
Part Number: 2802-4
1. Warning – do not operate the machine without a
deck or other implement attached.
2. Forward Speed Control
● Move lever forward to increase speed; back
to stop.
3. Body Tilt Latch
● Raise lever to release.
● Lift at back of body to raise.
4. Warning – do not engage PTO clutch with PTO
shaft disconnected.
5. PTO Clutch Lever
● Move lever forward to engage PTO clutch;
back to disengage.
2.
3.
4.
5
1.
1. Warning – rollover/crushing hazard.
● Do not operate the machine on steep slopes
or near dropo󰀨s.
● Avoid quick and/or sharp turns when operat
ing on slopes.
2. During normal operation always keep the ROPS
locked fully upright and use the seat belt.
3. Never use the seat belt if the ROPS is not locked
fully upright.
4. Do not operate the machine on slopes if the
ROPS is not locked fully upright.
5. Do not remove the ROPS.
Location: ROPS Roll Bar (If Equipped)
Part Number: 5685-3
2.
3.
1.
4.
5.
5685-3