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TROUBLESHOOTING
ENGINE
TROUBLE
A. Engine will not crank or is hard to
crank.
B. Engine will not start or shuts down.
C. Engine does not develop full
power.
D. Battery does not stay charged.
CAUSE
1. Battery will not hold a charge.
Faulty battery.
2. No or insufficient charging current.
3. Loose battery cable connection(s).
4. Lead #216A from solenoid to start
switch broken.
5. Spark plugs fouled.
1. Low oil pressure.
2. Out of fuel.
3. Fault in fuel system.
4. #216 lead from start switch to P.C.
board broke / (Onan engine).
5. Oil pressure switch faulty.
6. Generator terminal block connection
faulty.
7. Faulty P.C. Board (Onan engine).
1. Fuel filter clogged.
2. Air filter clogged.
1. Faulty battery.
2. Faulty charging system.
3. Loose or broken lead in charging
circuit.
WHATTODO
1. Replace with known good one.
2. Check connection of lead from
voltage regulator on engine to
charging ammeter and battery
lead #208 and #209.
3. Check and tighten connection at
battery, at starter, at engine foot,
or at frame.
4. Repair.
5. Replace spark plugs.
1. Check oil level and add oil as req’d.
2. Add fuel to tank.
3. Repair.
4. Repair.
5. Replace
6. Repair. Check leads #208, 224A,
224B, 212.
7. Replace.
1. Replace.
2. Replace.
1. Replace with a new battery.
2. Refer to Engine Operators Manual
for charging system service.
3. Refer to wiring diagram and check
related leads, especially #208 and
#209 leads.
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