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Problem
Engine does not
start.
Engine runs rough.
Engine overheats.
Engine runs when
ignition key is in the
off position.
TROUBLESHOOTING
Probable Cause
PTO switch is in the on position.
Parking brake is released.
Fuel tank is empty.
Fuel supply is contaminated.
Battery is not charged.
Battery cables are loose or
corroded.
Spark plug wire(s) are loose or
spark plug(s) are faulty.
Safety Interlock System is not
engaged or is faulty.
Electrical system is faulty.
Engine is faulty.
Choke control lever is engaged.
(Models 991128, 991129,
991130, 991132, 991133,
991140)
Fuel tank is empty.
Spark plug is faulty.
Fuel filter is dirty.
Air filter cartridge is plugged.
Engine is faulty.
Engine oil level is low.
Cooling fins are plugged.
Engine is faulty.
Ignition ground wire is
disconnected.
Ignition switch is faulty.
Correction
Push PTO switch down to off
position. See Power Take-off (PTO)
Switch on page 16.
Engage parking brake. See Parking
Brake Lever on page 18.
Fill fuel tank. See Before Operation
on page 18.
Replace with clean fuel.
Charge battery. See Charge Battery
on page 28.
Clean and tighten cables. See Clean
Battery on page 28.
Connect spark plug wire(s) or
replace spark plug(s). Refer to
engine manual.
Check Safety Interlock System. See
Before Operation on page 18.
Contact your Gravely dealer.
Contact your Gravely dealer.
Move lever to off position. See
Choke Control Lever on page 16.
Fill fuel tank. See Before Operation
on page 18.
Replace spark plug. Refer to engine
manual.
Clean or replace filter. Refer to
engine manual.
Clean or replace air filter cartridge.
Refer to engine manual.
Contact your Gravely dealer.
Add engine oil. Refer to engine
manual.
Clean engine. Refer to engine
manual.
Contact your Gravely dealer.
Connect ground wire to clean, metal
surface.
See your Gravely dealer.
EN - 42
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