GB - 19
Proper maintenance can prolong the life of unit. The
following chart shows the recommended service schedule.
More frequent service may be required due to working
conditions (heavy loads, high ambient temperatures, dusty
conditions, or airborne debris).
See the maintenance instructions in the Engine Manual for
additional information.
MAINTENANCE SCHEDULE
WARNING: AVOID INJURY. Read and understand
entire Safety section before proceeding.
Interval
Task
Action
Each Use
Check Safety Interlock System
WARNING: Safety interlock system failure and
improper operation of unit can result in death or serious
injury. Test this system each time the unit is operated. If
this system does not function as described, do not
operate until repairs are made. See Safety Interlock
System on page 15.
Check Parking Brake
Engage parking brake. Push unit. If unit rolls adjust parking
brake (see PARKING BRAKE ADJUSTMENT on page 28).
Check Hydraulic Oil Level
See Checking Hydraulic Oil Level on page 29.
Check Tires
See SPECIFICATIONS on page 34 for correct tire pressure.
Clean Unit
Clean engine, battery, seat, mower deck, etc. of dirt and debris.
Do not use solvents, hard cleaners, or abrasives.
NOTE: Protect painted surfaces with automotive type wax.
Follow Engine Maintenance Schedule
Perform scheduled engine maintenance. Refer to Engine
Manual for detailed instructions.
Check Cooling System (992113, 117, 121,
123, 124, 125, 126, 130, 134, 135, 136,
137, 138, 139)
IMPORTANT: To avoid damaging the radiator, DO NOT USE
high-pressure water to clean the radiator.
Check cooling system for dirt and debris in radiator screen, oil
cooler, hoses, fan, etc. Refer to Engine Manual for detailed
instructions.
Every 25
Hours
Check Mower Blades
Ensure mower blade hardware is tightened to 115 – 125 lbf-ft.
(156 – 169 N•m). Check mower blades for wear. Sharpen or
replace mower blades as needed (see SHARPENING MOWER
BLADE on page 22).
Every 50
Hours
Lubricate Front Axle and Pivot Points
Oil all pivot points, pin connections, and apply grease to front
axle grease zerk (see LUBRICATING UNIT on page 21).
