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: 174903
P/N 2000-39

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 anything in this manual is confusing or hard to understand, please contact your local authorized
dealer or call our service department, at [phone], 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
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

H37i 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 Compo-
nents.....................................................................2
Specications ......................................................3
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
Battery Charging ...................................................19
Battery Installation.................................................19
Mower Deck Assembly..............................................19
Deck Caster Wheels Installation ...........................19
Deck Discharge Deector
Shield Installation ..................................................20
PTO Shaft Guard Installation ................................20
Tilt-Up Roller Wheel Installation............................20
Mower Deck Installation on Tractor...........................20
Deck Installation....................................................20
Deck Leveling........................................................22
Measuring Deck Levelness ...........................22
Deck Leveling Procedure..............................23
Preoperating Checklist .....................................24
Operating Instructions 27
Control Identication, Location, and
Function ............................................................27
Ignition Switch...........................................................27
Engine Throttle..........................................................28
Body Latch................................................................28
Forward Speed Control (FSC) ..................................28
Steering Levers.........................................................28
Blade Clutch (PTO)...................................................28
Parking Brake ...........................................................29
Oil Pressure Warning Light/Horn ..............................30
Engine Service Light.................................................30
Over Temperature Warning Light/Horn .....................30
Transaxle Lockout Arms ...........................................31
Circuit Breaker ..........................................................31
Hourmeter.................................................................31
Roll-Over Protection System (ROPS, Optional)........32
Suspension Seat.......................................................33
Starting the Engine............................................36
Adjusting Ground Speed and Steering ...........36
Engaging the Blade Drive.................................38
Stopping the Machine .......................................39
Fuel Tank Selector Valve...................................40
Adjustable Foot Rests.......................................40
Adjusting Cutting Height ..................................40
Transport Position.....................................................41
Transaxle Lockout.............................................41
Recommendations for Mowing ........................42
Recommendations for Towing .........................44
Recommendations for Tilt-Up Deck
Operation/Transport..........................................44
Maintenance Instructions 45
Maintenance Schedule Chart .......................... 45
Important Tips for Care of the
Briggs & Stratton Engine..................................46
Fuel System..............................................................46
Starting/Stopping ......................................................46
Cooling System.........................................................46
Air Cleaner System...................................................46
Oil..............................................................................46
Lubrication.........................................................47
Engine Oil .................................................................47
Engine Break-In Oil ...............................................47
Checking Engine Crankcase Oil Level..................47
Changing Engine Crankcase Oil/Oil Filter.............48
Mower Deck Spindle Lubrication ..............................49
DR52, DS61 or DR64 Mower
Deck Lubrication .......................................................49

Table of Contents H37i
Check Transaxle Fluid Level.....................................49
Grease Fitting and Oil Point Lubrication ..................49
Transaxle Oil and Filter Change ...............................52
Cleaning .............................................................53
Engine Air Cleaner System.......................................53
Briggs & Stratton Air Cleaner ................................53
Engine Cooling System.............................................55
Cooling Air Intake Screen......................................55
Cylinder Head Cooling Fins...................................55
Grass Buildup in Mower Deck Housing ....................56
Transaxle Housing ....................................................58
Checking/Servicing ...........................................59
Security of Air Cleaner System .................................59
Battery.......................................................................59
Cleaning the Terminals..........................................59
Charging the Battery .............................................60
Tire Pressure ............................................................60
Wheel Nut Torque .....................................................60
Sharpen Mower Blades.............................................60
Drive Belts.................................................................61
Spark Plugs...............................................................61
Ignition Wires ............................................................61
Fuel Lines and Clamps .............................................62
Engine Starter ..........................................................62
Transmission Control Setting....................................62
Neutral-Park ..........................................................62
Straight Ground Tracking ......................................62
Blade Brake Action....................................................62
PTO U-Joints ...........................................................62
Safety Switch System ...............................................63
Forward Speed Control Friction Lock .......................63
Replacing/Repairing..........................................64
Drive Belts.................................................................64
Engine/PTO Belt....................................................65
Ground Drive Belt..................................................66
Deck Drive Belt......................................................67
Fuel Filter .................................................................68
Mower Blades ...........................................................68
Adjustments.......................................................70
Transmission Control ................................................70
Steering Lever Position Adjustment ......................70
Steering Handle Adjustment..................................70
Neutral Function Adjustment .................................71
Full Forward Speed Adjustment ............................72
Straight Tracking Adjustment.................................72
FSC Neutral Switch Adjustment ............................72
Forward Speed Control
Friction Adjustment................................................73
Blade Clutch (PTO)...................................................74
Clutch Engagement/Belt Tension ..........................74
Clutch Disengagement/Brake Action.....................75
Idler Pulley Maximum Travel Adjustment ..............75
Blade Brake Band Adjustment ..............................76

H37i General Information
1
General Information
HIGHLIGHTED INFORMATION
Walker Manufacturing recommends that any ser-
vice requiring special training or tools be performed
by an authorized Walker Mower dealer. There are
several general practices to be aware of in the
area of safety. 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.
Information of special importance has been high-
lighted in bold type in this manual. Refer to Safety
Instructions on page 9 for the meanings of
DANGER, WARNING, 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
tractor 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 numbers are helpful when obtaining replace-
ment parts and maintenance assistance. For
ready reference, please record these numbers in
the space provided.
Tractor Model No. ______________________
Tractor Serial No. ______________________
Deck Serial No. ______________________
Engine Model No. ______________________
Engine Serial No. ______________________
Date of Purchase ______________________
Fill In By Purchaser