Gravely 988100, Owner'S/Operator'S Manual

Page: 23 / 28

GB - 23
TROUBLESHOOTING
PROBLEM PROBABLE CAUSE CORRECTION
Engine will not
start 1. Safety Interlock System is
preventing start.
2. Fuel tank is empty or fuel is
contaminated.
3. Air cleaner is clogged or damaged.
4. Safety Interlock System out of
adjustment or defective.
5. Dirty or damaged spark plug.
1. The engine will not start unless the shift lever is in
neutral, the key is in the On position, and the Power
Take Off (PTO) is Off (988100, 102, 103, 110, 112).
The engine will not start unless the key is in the On
position and the Power Take Off (PTO) is Off
(988114, 115, 118, 119, 313) .
2. Add fuel. If necessary, replace the fuel with clean,
fresh fuel.
3. Clean or replace the filter element. See engine
manual.
4. See your Dealer for repairs.
5. See Engine Manual.
Unit will not move
or mow when the
engine is running 1. Transmission belt or mower belt is
broken, worn, or off the pulleys.
1. Check belts for wear, damage and correct position
on pulleys. Replace belts if worn or damaged. See
Replace Transmission Belt on page 20.
Changes in the
sound or
vibrations of the
unit 1. Loose or missing fasteners.
2. Mower blade problem.
3. Worn or damaged clutch.
1. Check all the fasteners. Replace if necessary.
2. Check blades for wear or damage. See Mower
Blades on page 21.
3. See your Dealer for repairs.
Unit pulls sharply
to the left or right
when the speed
control levers are
quickly moved all
the way forward
Unit does not
straighten
immediately when
the steering levers
are released
1. Steering levers out of adjustment. 1. See Adjust Steering Levers on page 17.
Unit loses power 1. Binding in the steering or brake
linkage.
2. Steering levers out of adjustment.
3. Worn or damaged traction belts.
4. Transmission shaft pulley worn.
1. Check linkage for debris or damage. Repair if
necessary. See Adjust Brakes on page 18 or your
Dealer for repairs.
2. See Adjust Steering Levers on page 17.
3. Check belts for wear or damage. Replace if
necessary. See Replace Traction Belts on page 18.
4. If pulley shows excessive wear, replace it. See your
Dealer for repairs.