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Westerbeke 38B FOUR Operator's Manual Page 64

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ENGINE
TROUBLESHOOTING
Introduction
The tables which follow indicate troubleshooting procedures based upon certain problem indicators, the
probable causes
of
the problems, and the recommendations to overcome these problems.
Note that the engine's control system (electrical system) is protected
by
a 20-Ampere manual reset circuit
breaker located on a bracket on the right side
of
the engine, just forward
of
the generator's end plate. The
preheat solenoid is close
by,
as is the emergency STOP switch, which may be mounted on the same
bracket
or
on the back
of
the standard instrument panel, depending upon the model.
Problem
Probable
Cause Verification/Remedy
PREHEAT switch is depressed:
I.
Battery switch not on.
I.
Check switch andlor battery
no panel indications, fuel connections.
solenoid, electric fuel pump
and preheat solenoid not
2.
20-Amp circuit breaker
2.
Reset breaker;
if
breaker trips
energized.
tripped.
again, check preheat solenoid
circuit and check circuit for shorts
to ground
START switch is depressed:
I.
Connection to solenoid
I.
Check connection.
no starter engagement. faulty.
2.
Faulty START switch.
2.
Check switch with ohmmeter.
3.
Faulty solenoid. 3. Check that
12
volts are present
at
starter solenoid energizing spade
terminal when switch depressed.
4. Loose battery connection.
4. Check battery connection.
5.
Low batteries.
5.
Check battery charge state.
START switch is depressed: I.
Poor connections to fuel
I.
Check connections.
panel indications
OK; start solenoid.
solenoid OK; fuel solenoid not
functioning.
2.
Defective fuel solenoid.
2.
Check mechanical positioning
of
fuel solenoid for plunger
bottoming.
3.
Manually check movement
of
fuel solenoid plunger and throttle
arm.
4.
Check for voltage drop at
solenoid during preheat. Check
wire size from remote panels.
WESTERBEKE
GENERATORS
60
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