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TROUBLESHOOTING
PROBLEM PROBABLE CAUSE CORRECTION
Engine does not
crank.
PTO engaged. Disengage PTO.
Parking brake disengaged. Engage parking brake.
Loose or corroded battery cables. Clean and tighten battery cables.
See
Clean Battery on page 27.
Discharged battery. Charge battery. See
Charging the
Battery
on page 27.
Faulty starter. See your Gravely Dealer.
Blown fuse. Check main fuse and replace if
necessary.
Failed relay. Check relays in fuse block and
replace if necessary
Loose or broken wires. Check wire harness and
connections.
Weak battery. Check voltage and charge if
required. See
Charging the Battery
on page 27.
Engine cranks but
does not start.
Fuel tank empty. Fill fuel tank. See Filling Fuel Tank
on page 17.
Faulty spark plug. Replace spark plug. Refer to
Engine Manual.
Air cleaner is plugged or dirty. Clean or replace air cleaner. Refer
to Engine Manual.
Fuel filter is dirty. Clean or replace fuel filter. Refer to
Engine Manual.
Faulty engine. Refer to Engine Manual or see
your Gravely Dealer.
Weak battery. Check voltage and charge if
required. See
Charging the Battery
on page 27.
Oil pressure light
is on.
Oil pressure is low. Refer to Engine Manual.
Engine continues
to run when
ignition key is in
the off position.
Ignition ground wire disconnected. Connect ground wire to clean metal
surface.
Ignition switch failure. Replace ignition switch. See your
Gravely Dealer.
PTO or mower
blades do not
engage or shut off.
Operator presence switch not
depressed.
Depress operator presence switch
by holding down right steering
control handle.
Faulty PTO switch. Check the electrical system to the
clutch for damage or wear. See
your Gravely Dealer.
Unit does not
drive.
Parking brake engaged. Disengage parking brake.
Transmission bypass levers open. Close transmission bypass levers.
See
To Push The Unit on page 19.
Hydraulic oil level low. Add hydraulic oil. See
Check
Hydraulic Fluid Level
on page 24.
Faulty hydraulic drive system. See your Gravely dealer.