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GB - 26
TROUBLESHOOTING
PROBLEM PROBABLE CAUSE CORRECTION
Engine does not
crank.
1. PTO engaged.
2. Parking brake disengaged.
3. Loose or corroded battery cables.
4. Discharged battery.
5. Faulty starter.
1. Disengage PTO.
2. Engage parking brake.
3. Clean and tighten battery cables (see
Clean Battery on page 19).
4. Charge battery (see Charging the
Battery on page 19).
5. See your Gravely Dealer.
Engine cranks but
does not start.
1. Fuel tank empty.
2. Faulty spark plug.
3. Air cleaner is plugged or dirty.
4. Fuel filter is dirty.
5. Faulty engine.
1. Fill fuel tank (see FILLING FUEL TANK
on page 14).
2. Replace spark plug. Refer to Engine
Manual.
3. Clean or replace air cleaner. Refer to
Engine Manual.
4. Clean or replace fuel filter. Refer to
Engine Manual.
5. Refer to Engine Manual or see your
Gravely Dealer.
Battery light does not
light up when starting
engine.
1. Discharged battery. 1. Charge battery (see Charging the
Battery on page 19).
Oil pressure light is
on.
1. Oil pressure is low. 1. Refer to Engine Manual.
Engine continues to
run when ignition key
is in the off position.
1. Ignition ground wire disconnected.
2. Ignition switch failure.
1. Connect ground wire to clean metal
surface.
2. Replace ignition switch (see your
Gravely Dealer).
PTO or mower blades
do not engage or shut
off.
1. Operator presence switch not
depressed.
2. Faulty PTO switch.
1. Depress operator presence switch by
sitting on seat.
2. Check the electrical system to the
clutch for damage or wear. See your
Gravely Dealer.
Unit does not drive.
1. Parking brake engaged.
2. Transmission bypass levers open.
3. Hydraulic oil level low.
4. Faulty hydraulic drive system.
1. Disengage parking brake.
2. Close transmission bypass levers (see
MOVING THE UNIT WITH THE
ENGINE OFF on page 15).
3. Add hydraulic oil (see Check Hydraulic
Fluid Level on page 17).
4. See your Gravely dealer.