GB - 24
TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
CORRECTION
Engine will
not
crank/start.
1.
Safety interlock system is not
engaged or is faulty.
1.
Check safety interlock system (see
Safety Interlock System
on page 9).
2.
Fuel tanks empty.
2.
Fill fuel tanks (see
Filling The Fuel
Tanks
on page 11).
3.
Fuel shut-off valve closed.
3.
Open fuel shut-off valve.
4.
Discharged battery.
4.
Charge battery (see
Charging the
Battery
on page 20).
5.
Poor connection between battery and
battery cables.
5.
Tighten battery cables and/or clean
battery and battery cables (see
Cleaning Battery and Battery Cables
on page 20).
6.
Spark plug wire(s) loose or spark
plug(s) faulty.
6.
Connect spark plug wire(s) or replace
spark plug(s). Refer to Engine Manual
for detailed instructions.
7.
Faulty electrical system.
7.
Contact your
Gravely
Dealer.
8.
Faulty engine.
8.
Contact your
Gravely
Dealer.
Engine
runs
rough.
1.
Choke engaged.
1.
Disengage choke.
2.
Air filter cartridge plugged.
2.
Clean or replace air filter cartridge.
Refer to Engine Manual for detailed
instructions.
3.
Faulty engine.
3.
Contact your
Gravely
Dealer.
Unit does not
move with
engine
running
when using
steering
levers.
1.
The transmission bypass lever is
engaged.
1.
Disengage transmission bypass lever
(see
Moving The Unit Manually
on
page 12).
2.
Faulty hydrostatic belt.
2.
Replace hydrostatic belt (see
Hydrostatic Belt Replacement
on
page 22).
3.
Faulty transmission.
3.
Contact your
Gravely
Dealer.
PTO or
mower
blades do
not engage
or shuts off.
1.
Operator presence switch not
depressed.
1.
Depress operator presence switch by
sitting on seat.
2.
Faulty operator presence switch.
2.
Contact your
Gravely
Dealer.
3.
Electric clutch connector is loose or
disconnected.
3.
Connect the electric clutch connector.
See
Hydrostatic Belt Replacement
on
page 22 for the electric clutch
connector location.
4.
Faulty PTO belt.
4.
Replace PTO belt (see
PTO Belt
Replacement
on page 21).
5.
Electric clutch out of adjustment.
5.
Adjust electric clutch (see
Electric
Clutch Adjustment
on page 22).
6.
Faulty PTO switch, wires, connectors,
or clutch.
6.
Contact your
Gravely
Dealer.
Engine
overheats.
1.
Engine oil level low.
1.
Add engine oil. Refer to Engine
Manual for detailed instructions.
2.
Cooling system plugged.
2.
Clean cooling system. Refer to Engine
Manual for detailed instructions.
3.
Faulty engine.
3.
Contact your
Gravely
Dealer.
Unit moves
with engine
off and
parking
brake
engaged.
1.
The parking brake needs adjustment.
1.
Contact your Gravely Dealer.
2.
Faulty parking brake.
2.
Contact your
Gravely
Dealer.
