Kohler l654 Service Manual page 15

CONDITION
1. Engine will not crank.
POSSIBLE CAUSE/CORRECTION (SECTION)
1. Battery
cable connections reversed. (Must be negative ground.)
2. 10 amp fuse in controller blown (5-3).
3. Defective start switch or "C" relay (5-2).
4. Open circuit in wiring harness or connector.
5. Faulty starter motor.
6. Open circuit in REI diode (5-4).
7. Normally closed 3CR contacts, open (5-5).
8. Busted or loose ground strap.
2. Engine cranks but will not start. 1. Choke not operating or out of adjustment (7-1, 7-2).
2. Check fuel supply to carburetor.
3. Faulty fuel shut-down control (7-3).
4. Faulty fuel pump.
5. Dirty or stuck ignition points.
6. Faulty condenser.
7. Faulty spark plug.
3. Engine starts, then stops when
switch is closed.
8. 2CR relay not functioning. Must have battery voltage on positive
connection of ignition coil (5-5).
9. Fuel mixture. Replace.
1. No AC generator
output.
2. Faulty 3CR interlock relay (5-5).
3. Faulty 4CR voltage sensing relay (5-5).
4. Faulty exciter voltage regulator (6-7).
4. No AC output.
1. Circuit breakers in the off position (2-3).
2. Generator brushes not making contact on slip rings (6-5).
3. Faulty build-up circuit. Battery voltage must be present at terminal
"B" of regulator during cranking (6-7).
4. Open connection in wiring harness or plug connector (5-2).
5. Faulty exciter voltage regulator (6-7).
6. Circuit protector tripping due to overload, reduce load.
5. Low output or excessive drop in
voltage (below
1 IO volts).
1. Generator set overloaded.
2. Engine rpm set too low (7-5 thru 7-9).
3. Faulty exciter voltage regulator (6-7).
4. Poor stator coil connections, use a clamp-on ammeter and check
each connection.
.
6. High AC voltage (above 125 volts AC).
1. Faulty
exciter voltage regulator.
2. Stator reconnected improperly.
7. Engine shuts down for no apparent
reason.
1. Generator set overheated - improper installation. Refer to RV
installation manual or 75kW Owner's Manual.
2. No fuel.
3. Oil level or oil pressure system failure.
4. Faulty shutdown solenoid.
8. Unit will not operate with remote
switch - OK at controller.
I.
Incorrect wiring of remote switch to remote plug assembly. Center
pole of remote switch must connect to terminal 4 of remote harness
plug, Figure 5-2.
2. Open connection in wiring.
Table 4-2. Troubleshooting Generator