GB - 14
IMPORTANT: Proper maintenance can prolong the life of
unit. The following chart shows the recommended service
schedule. Refer to the maintenance instructions in the
Engine Manual for additional information.
NOTE: To have full access to the engine, the seat must be
tipped forward (see TIPPING SEAT FORWARD on page 15)
and the hood opened (see on page 15).
MAINTENANCE SCHEDULE
WARNING: AVOID INJURY. Read and understand
the 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 10).
Check Parking Brake
Engage parking brake and engage transmission bypass lever (see on page 14).
Push unit. If unit rolls, contact your Gravely Dealer.
Clean Unit
Clean engine, battery, seat, mower deck, etc. of all dirt and debris. Do not use
solvents, hard cleaners, or abrasives.
NOTE: Protect painted surfaces with automotive type wax.
Check Tires
See SPECIFICATIONS on page 25 for correct tire pressure.
Check Mower Blades
Check for worn or damaged mower blades (see SHARPENING MOWER BLADE on
page 17).
Each Use
Follow Engine Manual
Maintenance Schedule
Perform scheduled engine
maintenance. Refer to Engine
Manual for detailed instructions.
NOTE: To drain the oil, use the oil
drain petcock (1) supplied with unit,
not the drain plug that is shown in the
Engine Manual.
25 Hours or
Every Season
Check Battery
Keep battery and battery terminals clean (see Cleaning Battery and Battery Cables
on page 19).
Lubricate Unit
Apply grease to zerk (1) on each front wheel
50 Hours or
Every Season
Check Fasteners
Check mower blade mounting hardware and all other fasteners. Replace fasteners
that are missing or damaged. Tighten all nuts and bolts to the correct torque value.
100 Hours or
Every Season
Check All Belts
Replace worn or deteriorated belts.
• Check hydrostatic belt (see REPLACING HYDROSTATIC BELT on page 21 for
hydrostatic belt location).
• Check PTO belt (see REPLACING PTO BELT on page 20 for PTO belt
location).
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