Walker R21 User Manual

34
Maintenance
R21 Maintenance Schedule Chart
This section provides the recommended service items and intervals. Regular maintenance is required to keep
the mower operating at optimal levels and to prevent damage. Information about each of these tasks is pro-
vided this section, and many of them can be performed by the owner-operator unless otherwise noted. Contact
your Walker Dealer if you have questions or need assistance.
Service Item
Each
Use
25
Hours
75
Hours
100
Hours
500
Hours Yearly Page
Check Engine Crankcase Oil Level x
35
Check/Clean Engine Air Cooling System x
36
Clean Grass Buildup Under Deck x
37
Inspect/Service Mower Blades x
37
Check Security of Air Filtration
Components
x
39
Check Discharge Shield x
39
Lubricate Grease Fittings and Oil Points* x
39
Check Tire Pressure x
41
Check Drive Belts (Ground Drive, Blade) x
41
Check Safety Switch System x
41
Clean/Replace Engine Precleaner Air
Filter*
x
42
Replace Engine Air Filter* x
43
Change Engine Oil and Filter** x
44
Clean Engine Cooling System x
46
Replace Fuel Filter x
46
Clean Transaxle Housing and Fans x
46
Check Drive Tire Mounting Nuts x
47
Check Blade Brake Function x
47
Replace Spark Plugs and Set Gap x
47
Check/Adjust Engine Valve Lash
r
x
47
Check FSC Friction Lock x
48
Check Transmission Control Settings x
48
Check Fuel Lines and Clamps x
48
Clean Battery Terminals x
49
Long-Term Storage Preparation
(As Required)
x
49
* More often in extremely dusty or dirty conditions
** Change engine oil and lter after rst 5 hours of operation of a new engine (break-in period)
r
Must be performed by an authorized Kohler Dealer.

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)