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GB - 17
* Change oil after first 8 hours of operation and every
100 hours thereafter.
CHECK SAFETY INTERLOCK SYSTEM
Test the safety interlock system at each operation. If
the system does not function properly, do not operate
the unit until repairs are made.
988100, 101, 102, 103, 104, 110, 112
Engine must not start unless PTO is disengaged and
the shift lever is in neutral. To test:
1. With engine off, engage PTO.
2. Turn electric start model ignition switch to Start.
Engine must not crank.
Turn recoil start model ignition switch to On. Pull
recoil start handle. Engine must not start.
3. Disengage PTO.
The engine MUST stop whenever the operator
removes both hands from controls while the PTO or
transmission is engaged. To test:
1. Start engine and engage PTO.
2. Release operator presence control lever(s).
Engine must stop.
3. Disengage PTO.
4. Restart engine.
5. Place shift lever in Forward.
6. Release operator presence control lever. Engine
must stop.
988114, 115, 118, 119, 313
Blades must not rotate unless the operator presence
control levers and PTO are engaged. To Test:
1. With engine on, release operator presence
controls and engage PTO.
2. Blades must not rotate.
3. Disengage PTO.
The blades MUST stop whenever the operator
removes both hands from controls while the PTO is
engaged. To test:
1. Start engine and engage PTO.
2. Release operator presence control lever(s).
Blades must stop.
NOTE: All motion must stop whenever operator
releases control levers.
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).
MAINTENANCE
WARNING: AVOID INJURY. Read and
understand the entire Safety section before
proceeding.
MAINTENANCE SCHEDULE
Each
Use
25 50 100
Check Safety Interlock
System
•
Check Air Cleaner
•
Check Engine Oil
•
Check Engine Cooling
•
Check Fasteners
•
Check Tire Pressure
•
Check Battery and Battery
Fluid
•
Check All Belts
•
Mower Blades
•
Clean Air Cleaner Foam
Element
•
General Lubrication
•
Change Engine Oil
*•
Check Fuel Filter
•
Check Spark Plug
•
Check Muffler
•
Clean Air Cleaner Paper
Element
•