GB - 18
NOTE: If engine does not start in five seconds, release
ignition key, wait, and then repeat. Once engine has started,
ignition key will return to the Run (2) position.
5. Move the choke control to the off position when engine
has warmed up.
To Start Diesel Units (992121, 123, 125, 126, 136, 137,
138):
1. Insert ignition key.
2. Move the throttle to 3/4 fast position.
3. Turn ignition key to Run (2) position. The glow plug light
will come on for approximately 5 seconds.
4. When glow plug light goes out, turn
ignition key Start (3) position.
NOTE: If engine does not start in five
seconds, release ignition key, wait, and
then repeat. Once engine has started,
release ignition key and ignition key will
return to the Run (2) position.
To shut off:
1. Disengage PTO.
2. Set parking brake.
3. Turn ignition key to Off (1) position.
OPERATING MOWER
1. Start engine.
2. Move throttle lever to 3/4 to full speed.
IMPORTANT: Never engage the PTO if the mower is
plugged with grass or other material.
3. Engage PTO to engage mower blades.
4. Move throttle lever to fast.
5. Release parking brake.
6. Use steering levers to move the unit.
7. Disengage PTO to stop mower blades.
PARKING THE UNIT
1. Move steering levers to the neutral position. Shut off
PTO.
2. Move throttle lever to the slow position.
3. Engage parking brake.
MOVING UNIT MANUALLY
IMPORTANT: Never tow unit.
1. Place unit in the service position (see SERVICE
2. Turn right and left bypass valves counterclockwise 1/2
turn (figure 7).
3. Disengage parking brake.
4. Push unit to desired location.
5. Engage parking brake.
6. Turn right and left bypass valves clockwise 1/2 turn.
TRANSPORTING UNIT
ALWAYS shut off engine, set parking brake, and remove key
when transporting unit on a truck or trailer. Tie unit down
securely. Do not tie down by linkages, guards, cables or
other parts that may be damaged.
FOR BEST PERFORMANCE
Cut grass when it is dry.
Keep mower blades sharp.
Keep mower deck properly leveled.
Adjust anti-scalp rollers to prevent scalping.
Do not set height of cut too low. For very tall grass, mow
twice.
Do not travel too fast.
Mow with the engine set at full throttle.
When mulching, only remove 1/3 of grass length per cutting.
Discharge clippings into areas already cut.
Vary cutting pattern with each mowing.
Do not allow grass or debris to collect inside of mower deck.
Clean after each use.
WARNING: Move the steering control levers slowly
and keep the throttle control lever at slow speed
until you learn how to operate the unit.
WARNING: Do not bypass transmission when on a
slope.
1
2
3
1. Right Bypass Valve
2. Left Bypass Valve
1
2
OF3221
Figure 7
