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Walker
Lawn Mower
R21
Walker R21 User Manual
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General Information
R21
8
Rear View and Left Side V
iew
T
ailwheel Fork
and Wheel
Footrests
T
ailpipe
T
ilt-up Link
T
ilt-Up Lock
Hole
Deck Support
Pins
Left Hand
Drive Wheel
LH
T
ransaxle
Spark Plug
Access Hole
11
13
Table of Contents
Default Chapter
3
Table of Contents
3
General Information
5
Highlighted Information
5
Glossary
6
Servicing of Engine and Transaxle Components
6
Identifying Number Locations
7
Tractor and Deck Identifiers
7
Specifications
8
Component Identification
11
Safety Instructions
14
Safety before Operating
14
Safety During Operation
15
Safety During Maintenance
17
Safety, Control, and Instruction Decals
18
Operating Instructions
23
Operator Controls
23
Ignition Switch
23
Engine Throttle
24
Steering Levers
24
Forward Speed Control (FSC)
26
Blade Clutch Switch (PTO)
26
Parking Brake
26
Circuit Breaker
26
Seat Panel Latch
27
Hourmeter
27
Transaxle Lockout Arms
27
Pre-Operation Checklist
28
Starting the Engine
29
Adjusting Ground Speed and Steering
29
Engaging the Blades
31
Recommendations for Getting Started
31
Stopping the Machine
32
Adjusting the Cutting Height
33
Deck Tilt-Up Position
33
Recommendations for Mowing
34
Transaxle Lockout
36
Recommendations for Tilt-Up Deck Operation and Transport
37
Maintenance
38
R21 Maintenance Schedule Chart
38
Check Engine Crankcase Oil
39
Check/Clean Engine Air Cooling System
40
Clean Grass Buildup under Deck
41
Inspect/Service Mower Blades
41
Check Security of Air Filtration Components
43
Check Discharge Shield
43
Lubricate Grease Fittings and Oil Points
43
Check Tire Pressure
45
Check Drive Belts (Ground Drive, Blade)
45
Check Safety Switch System
45
Clean/Replace Engine Precleaner Air Filter
46
Replace Engine Air Filter
47
Change Engine Crankcase Oil and Filter
48
Clean Engine Cooling System
49
Replace Fuel Filter
50
Clean Transaxle Housing and Fans
50
Check Drive Tire Mounting Nuts
51
Check Blade Brake Function
51
Replace Spark Plugs and Set Gap
51
Check/Adjust Engine Valve Lash
51
Check FSC Friction Lock
52
Check Transmission Control Settings
52
Check Neutral-Park Position
52
Check Straight Ground Tracking
52
Check Fuel Lines and Clamps
52
Clean Battery Terminals
53
Long-Term Storage Preparation
53
Mower Preparation for Storage
53
Engine Preparation for Storage
54
Restarting the Mower after Storage
54
Service and Adjustments
55
Belt Replacement
55
Replacing the Blade Drive Belt (PTO)
56
Replacing the Ground Drive Belt
57
Deck Leveling
59
Steering Handle Adjustment
60
Forward Speed Control Friction Adjustment
60
Neutral Function Adjustment
61
Straight Tracking Adjustment
62
Appendix: Assembly Instructions
63
Assembling the Tractor
63
Assembling the Deck
64
Deck Caster Wheel Installation
64
Tilt-Up Roller Wheel Installation
64
Installing the Deck
64
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Walker R21 Specifications
General
Drive System
Hydrostatic
Cutting Height
1.5 - 4.5 inches
Engine
Kohler CH740
Engine Type
Air-cooled
Cutting Width
52 inch
Wheel Size
20 inches (rear)
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