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GB - 18
CHECK BATTERY (988104)
Terminals
Inspect battery and terminals every 25 hours.
To clean terminals:
1. Remove battery cover.
2. Remove battery cables from terminals.
3. Clean or service battery away from unit. Remove
corrosion from battery terminals and cable
connections with wire brush, then wash with a
weak baking soda solution.
4. Apply a thin coat of dielectric grease or petroleum
jelly to terminals and cable ends to retard
corrosion.
5. Replace battery and secure with battery cover.
CHECK ALL BELTS
Check all belts for wear or damage every 25 hours. If
belts slip, check for damaged belts or tensioner.
MOWER BLADES
Check mower blades for wear every 25 hours of
operation. Ensure blade hardware is tightened to
115-125 lbf-ft (156-169.5 N•m) of torque.
CLEAN AIR CLEANER FOAM ELEMENT
See engine manual for detailed instructions.
GENERAL LUBRICATION
Apply a small amount of oil to the pivot points as
required for smooth operation (Figure 7).
Apply high quality lithium based grease to all lube
fittings every 50 hours of operation.
NOTE: The mower spindle assembly is maintenance
free.
CHANGE ENGINE OIL
Open the petcock to drain oil through oil drain hole on
left side of engine. See engine manual for additional
instructions.
CHECK FUEL FILTER
See engine manual for detailed instructions.
CHECK SPARK PLUG
See engine manual for detailed instructions.
CHECK MUFFLER
Check muffler for damage or wear. Replace if
necessary.
CLEAN AIR CLEANER PAPER ELEMENT
See engine manual for detailed instructions.
ADJUSTING THE UNIT TO TRACK
STRAIGHT
Check Forward Tracking
1. Start engine and run unit at full throttle.
2. Shift into a forward gear and slowly release both
steering levers to the full outward position
(988100, 101, 102, 103, 104, 110, 112).
Shift into a forward gear and slowly push both
control levers against the pivot bar (988114, 115,
118, 119, 313).
3. Note which direction, if any, the unit pulls.
4. Stop unit and engine.
WARNING: AVOID INJURY. Read and
understand the entire Safety section before
proceeding.
WARNING: Battery posts, terminals and
related accessories contain lead and lead
compounds, chemicals known to the State of
California to cause cancer and reproductive
harm. Wash hands after handling.
Figure 7
1. Half Shafts
2. Wheel Bearings
2
1
2
OG1485
SERVICE AND ADJUSTMENTS
WARNING: AVOID INJURY. Read and
understand the entire Safety section before
proceeding.