Troubleshooting - Gravely ZT 34 Operator's Manual

PROBLEM
Engine will not
crank/start.
Engine runs
rough.
Unit does not
move with
engine running
when using
steering levers.
PTO or mower
blades do not
engage or shut
off.
Engine
overheats.
Unit moves with
engine off and
parking brake
engaged.

TROUBLESHOOTING

PROBABLE CAUSE
1. Safety interlock system
is not engaged or is
faulty.
2. Fuel tank is empty.
3. Discharged battery.
4. Poor connection
between battery and
battery cables.
5. Spark plug wire(s)
loose or spark plug(s)
faulty.
6. Faulty electrical system. 6.
7. Faulty engine.
1. Choke engaged.
2. Air filter cartridge
plugged.
3. Faulty engine.
1. The transmission
bypass lever is
engaged.
2. Faulty hydrostatic belt.
3. Faulty transmission.
1. Operator presence
switch not depressed.
2. Faulty operator
presence switch.
3. Faulty PTO belt.
4. Faulty PTO switch,
wires, connectors, or
clutch.
1. Engine oil level low.
2. Cooling system
plugged.
3. Faulty engine.
1. The parking brake
needs adjustment.
2. Faulty parking brake.
1. Check safety interlock system. See
Safety Interlock System on page 16.
2. Fill fuel tank. See Filling Fuel Tank on
page 18.
3. Charge battery. See Charging the
Battery on page 28.
4. Tighten battery cables and/or clean
battery and battery cables. See
Cleaning Battery and Battery Cables on
page 28.
5. Connect spark plug wire(s) or replace
spark plug(s). Refer to Engine Manual
for detailed instructions.
Contact your Gravely dealer.
7. Contact your Gravely dealer.
1. Disengage choke.
2. Clean or replace air filter cartridge.
Refer to Engine Manual for detailed
instructions.
3. Contact your Gravely dealer.
1. Disengage transmission bypass lever.
See Moving Unit Manually on page 20.
2. Replace hydrostatic belt. See
Replacing Hydrostatic Belt on page 31.
3. Contact your Gravely dealer.
1. Depress operator presence switch by
sitting on seat.
2. Contact your Gravely dealer.
3. Replace PTO belt. See Replacing PTO
Belt on page 30.
4. Contact your Gravely dealer.
1. Add engine oil. Refer to Engine Manual
for detailed instructions.
2. Clean cooling system. Refer to Engine
Manual for detailed instructions.
3. Contact your Gravely dealer.
1. Contact your Gravely dealer.
2. Contact your Gravely dealer.
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CORRECTION