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GB - 18
988116, 117, 120, 314
To test:
1. With engine off, set controls as listed in line A of
the table below.
2. Try starting the engine. See Starting and Shut Off
on page 13.
IMPORTANT: If the system does not function properly,
do not operate the unit until repairs are made.
3. Repeat steps 1-2 for lines B-C of the table below.
4. Shut off the unit, if necessary. See Shut Off and
"To stop mowing."
5. With the engine running, set controls as listed in
lines D -G of the table below.
IMPORTANT: If the system does not function properly,
do not operate the unit until repairs are made.
* Note: Unit will not start if both operator presence
control levers are engaged.
** Note: Engine stops if both operator presence control
levers are released while parking brake is off.
CHECK AIR CLEANER
Check the air cleaner element before each use. See
engine manual for detailed instructions.
CHECK ENGINE OIL
Check the engine oil level before each use. Never
operate the engine when the oil level is low. See engine
manual for detailed instructions.
CHECK ENGINE COOLING
Check the engine air cooling system before each use.
See engine manual for detailed instructions.
CHECK FASTENERS
Check all nuts, bolts, and other fasteners before each
use. Replace missing or damaged fasteners.
CHECK TIRE PRESSURE
Check tires for proper inflation, excessive wear or
damage before each use. The correct air pressure is
8 to 16 psi (55 to 110 kPa).
CHECK HYDRAULIC FLUID LEVEL
Check the hydraulic fluid level with the dipstick before
each use (more often if leaks are observed). Stop the
engine before servicing any hydraulic parts.
1. Run unit until warm.
2. Shut off engine.
3. Unscrew tank cap to remove cap/dipstick.
NOTE: Do not allow any dirt to get into the system.
4. Wipe dipstick clean.
5. Screw cap/dipstick back into tank.
6. Remove cap/dipstick and check hydraulic oil level
mark.
7. Add hydraulic fluid as needed. Do not overfill. See
Specifications for hydraulic fluid type.
CHECK BATTERY (988108, 109, 117)
Terminals
Inspect battery and terminals every 25 hours.
PTO
PARKING BRAKE
OPERATOR PRESENCE
CONTROL
ENGINE
A
Off Off Off Won’t Start
B
Off On Off Starts
C
Off On On* Starts
D
Won’t Run On Off Runs
E
On/Off Off Off** Stops
F
Off Off Off Stops
G
Off On Off Runs
WARNING: HYDRAULIC FLUID UNDER
PRESSURE can penetrate skin and cause
severe burns that can result in death or
serious injury.
ALWAYS keep body and hands away from
pin holes or nozzles which eject hydraulic
fluid under pressure. ALWAYS use paper or
cardboard and not hands to search for leaks.
KNOW that all hydraulic fluid connections
are tight and all hydraulic hoses and lines
are in good condition BEFORE applying
pressure to system.
Foreign fluid injected into skin must be
surgically removed within a few hours by a
doctor familiar with this form of injury or
gangrene may result.
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.