Installation manual
ENGINE
TROUBLESHOOTING
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.
Problem
Probable
Cause
Key
switch
on,
PREHEAT
switch
1.
Battery
Switch
not
on.
depressed:
no
panel
indications:
fuel
solenoid
or
electrical
fuel
pump
2.
Emergency
stop
sw"itch
off.
2.
20-Amp
circuit
breaker
tripped.
3.
1
a-Amp
breaker
tripped
on
preheat
solenoid.
4.
Loose
battery
connections.
5.
Preheat
solenoid
not
operating.
START
SWITCH
DEPRESSED,
no
starter
, .
Connection
to
solenoid
faulty.
engagement.
2.
Faulty
switch.
3.
Faulty
solenoid.
4.
Loose
battery
connections.
5.
Low
battery.
START
switch
is
depressed:
panel
1.
Poor
connections
to
fuel
solenOid.
indications
OK;
starter
solenoid
OK
fuel
solenoid
not
functioning.
2.
Defective
fuel
solenoid.
Generator
engine
cranks,
but
does
not
1.
Faulty
fueling
system.
start,
fuel
solenoid
energized.
2.
Preheat
solenoid
faulty.
Engine
can't
be
stopped.
1.
Faulty
DC
alternator.
Battery
funs
down.
1.
Oil
Pressure
switch.
2.
High
resistance
leak
to
ground.
3.
Low
resistance
leak.
4.
Poor
battery
connections.
5.
DC
alternator
not
charging
..
Battery
not
charging
1.
DC
charge
circuit
faulty.
2.
Alternator
drive.
Generator
eogme
stops.
1.
Fuel
lift
pump
failure.
2.
Switches
and/or
wiring
loose·
or
disconnected.
3.
Fuel
starvation.
4.
20
Amp
circuit
breaker
tripping.
5.
Exhaust
system
is
restricted.
6.
Water
in
fuel.
Note:
The engine s electrical system is protected by a
20
amp
manual reset circuit breaker located on a
bracket at the rear
of
the engine. 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 instrument panel, depending
upon
[he
generator model.
Verification/Remedy
1.
Check
switch
and/or
battery
connections.
2.
Check
emergency
stop
SW'ltch
posItion.
2.
Reset
breaker;
if
breaker
trips
again,
check
preheat
solenoid
circuit
and
check
circuit
for
shorts
to
ground.
3.
Check
voltage
at
and
after
breaker
on
preheat
solenoid.
4.
Check
(+)
connection
to
starter
solenoid
and
(-)
connection
to
engine
grouna
stud.
Check
battery
cable
connections
5.
Check
solenoid
"S"
terminal
for
voltage,
1.
Check
connection.
2.
Check
switch
with
ohmmeter.
3.
Check
that
12
volts
are
present
at
the
solenoid
connection.
4.
Check
battery
connections.
5.
Check
battery
charge
stale.
1.
Check
connections.
2.
Check
thaI
12
volts
are
present
at
the
(+)
connection
on
the
fuel
fun
solenoid.
, .
Check
that
fuel
valves
are
open,
1a.
Switch
10
combme
house
and
start
batteries.
1
b.
Replace
batteries.
2e.
Check
fuel
lift
pump.
2.
Check
solenoid.
1.
Remove
Exc.
connection
at
alternator,
repair
alternator.
1.
Observe
if
gauges
and
panel
lights
are
activated
when
engme
is
not
running.
Test
the
011
pressure
switch.
2.
Check
wiring.
Insert
sensitive
(0
-
.25
amp)
meter
in
battery
lines.
(Do
not
start
engine.)
Remove
connections
and
replace
after
short
is
located.
3.
Check
all
wires
for
temperature
rise
to
locate
the
fault.
4.
Check
cable
connections
at
battery
for
loose
connections,
corrosion.
5.
Check
connections,
check
belt
tension.
test
alternator.
See
DC
ELECTRICAL
SYSTEM/ALTERNATOR
1.
Perform
D.C.
voltage
check
of
generator
charging
Clfcuit.
See
Testing
the
Battery
Charging
Circuit
in
this
manual.
2.
Check
drive
belt
tension.
Alternator
should
turn
freely.
CheCk
for
loose
connections.
Check
output
with
voltmeter.
Ensure
12
volts
are
present
at
the
Exc.
terminal.
1.
Fuel
lift
pump
should
make
a
distinct
ticking
sound.
Replace
pump
with
spare.
2.
Inspect
wiring
for
short
circuits
and
loose
connections.
Inspect
switches
for
proper
operation.
3.
Check
fuel
supply,
fuel
valves.
fuel
lift
pump.
4.
Check
for
high
DC
amperage
draw
during
operation.
Ensure
breaker
is
not
overly
sensitive
to
heat
which
would
cause
tripping.
5.
Check
for
blockage,
collapsed
hose,
carbon
buildup
at
exhaust
elbow.
6.
Pump
water
from
fuel
tank(s);
change
filters
and
bleed
fuel
system.
,
"¥I17,WESTERBEKE
I Engines & Generators
31