service manual 44240 8.0, 10.0, 12.5 and 15.0 - Westerbeke

TROUBLESHOOTING GUIDE
Engine Overheats Coolant loss. Pressure test cooling
system.
Faulty raw water pump impeller.
Belts are loose or broken.
Raw water pump worn.
Faulty thermostat.
Heat exchanger is clogged.
Collapsed hose.
Low 011 Pressure Low oil level.
Faulty oil pressure sender
Wrong SAE type oil in the engine.
Faulty gauge
Wrong type oil filter.
Relief valve is stuck.
Faulty oil pump.
Faulty engine bearings.
Starting Battery Loose alternator drive belt
Faulty battery voltage regulator.
Connections to the alternator are loose
or faulty.
Faulty alternator.
No excitation to the regulator
High 011 Pressure Faulty sender or gauge
Di';% oil or wrong SAE type oil in the
eng ne.
Relief valve is stuck.
Blue Exhaust Smoke Lube oil is diluted.
Discharge from the Engine High lube oil level.
Crankcase breather hose is clogged.
Valves are worn or adjusted
incorrectly.
Piston rings are worn or unseated.
Black exhaust smoke Dirty flame arrester.
Discharge from the Engine Faulty carburetor.
Idle mixture jet too rich.
Accelerator diaphragm leaking.
Valves are worn or incorrectly
adjusted.
Lube oil is diluted.
Piston rings are worn or unseated.
NOTE: The engines control system (electrical system) is
protected by a 20 Ampere manual reset circuit breaker
located just outboard of the starter motor.
-..v- WESTERBEKE
Englnes'& Generators
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