
DCA6SPX4F GENERATOR • OPERATION MANUAL — REV. #2 (03/12/21) — PAGE 37
TROUBLESHOOTING (ENGINE/GENERATOR)
Table 11. Engine/Generator Troubleshooting
SYMPTOM
POSSIBLE PROBLEM
SOLUTION
Engine fails to start and
starter does not rotate.
Dead battery?
Replace battery.
Defective starter switch?
Replace starter switch.
Defective starter?
Replace starter.
Fuse F5 burned out?
Replace fuse.
Engine fails to start and
starter rotates.
Broken pre-heat circuit?
Check pre-heat circuit.
No fuel?
Add fuel.
Defective wiring?
Check wiring.
Engine starts, Idle Control
Switch is in OFF position and
engine remains at low speed.
Defective idle control switch?
Replace switch.
Clogged fuel strainer?
Clean or replace.
Clogged air cleaner?
Clean or replace.
Defective idle control device?
Replace.
Disconnected wiring?
Check and repair wiring.
Engine starts and Idle Control
Switch is in OFF position.
Engine speed rises and
battery discharges too soon.
Defective engine regulator?
Replace regulator.
Defective wiring?
Repair or replace wiring.
Engine starts and Idle Control
Switch is in OFF position.
Engine speed rises and
engine seems overloaded.
Defective alternator?
Repair or replace alternator.
Damaged alternator bearing?
Replace alternator bearings.
Engine starts and Idle
Control Switch is in OFF
position. Engine speed rises
and engine makes abnormal
noise.
Loose engine parts?
Check all engine parts for tightness.
Defective alternator?
Check alternator for damaged bearing or
loose clamping bolts.
Engine starts and Idle Control
Switch is in OFF position.
Engine speed rises and
remains at high speed when
Idle Control Switch is placed
in the ON position.
Defective idle control device?
Repair or replace idle control device.
Defective idle control switch?
Replace idle control switch.
Defective solenoid?
Replace solenoid.
Defective relay?
Replace relay.