Installation manual
MAINTENANCE
SCHEDULE
NOTE:
Use
the
engine
hourmeter
gauge
to
log
your
engine
hours or
record
your
engine
hours
by
running
time.
SCHEDULED
CHECK
HOURS
OF
OPERATION
MAINTENANCE
EACH
MAINTENANCE
DESCRIPTION
DAY
50
100
250
500
750
1000 1250
*Starter
Motor
D D
Check
solenoid
and
motor
for
corrosion.
Remove
and
lubricate.
Clean
and
lubricate
the
starter
motor
pinion
drive.
Distributor
1m]
D D
Check
ignition
timing.
Check
condition
of
distributor
cap
and
rotor.
*Engine
Cylinder
D D
Incorrect
valve
clearance
will
result
in
poor
engine
Compression
and
performance,
check
compression
pressure
and
Valve
Clearances
timing
and
adjust
valve
clearances.
*Engine
Timing
Belt
D
Remove
and
replace
every
1000
hours.
NOTE:
Failure
to
replace
the
timing
belt
at
the
recommended
interval
could
result
in
timing
chain
failure
resulting
in
major
damage
to
the
engine.
*Exhaust
Elbow
D
Test
exhaust
elbow
for
casting
integrity.
Replace
if
casting
is
corroded
or
deteriorated.
I
NOTE:
A
defective
exhaust
elbow
can
cause
carbon
monoxide
leakage!
Catalytic
Converter
@.]
D
Remove
water
injected
exhaust
elbow
and
visually
inspect.
Replace
every
2000
hours.
*Exhaust
System
Back
D
Perform
back
pressure
test
to
ensure
system
is
not
Pressure
developing
restrictions
that
will
increase
pressure
above
1.5
PSI
or
41
inches
of
water
column
at
full
operating
amperage
load.
Correct
as
needed.
Catalyst
.lmJ
D
Remove
water
injected
exhaust
elbow
and
visually
inspect
every
2000
hours.
Replace
as
needed.
Oxygen
Sensor
l
5
~~J
D
Inspect
every
1000
hours.
Replace
every
2000
hours.
CO
in
Exhaust
D
Sample
with
CO
analyzer.
*WESTERBEKE
recommends
this
service
be
performed
by
an
authorized
mechanic.
MEASURING
EXHAUST
BACK
PRESSURE
PSI
GAUGE
Exhaust systems normally produce resistance to the
flow
of
exhaust gases, causing back-pressure. Back-pressure must be
kept within a certain limit.
Check
the back-pressure before
the
generator
is
put
back
into service.
To test exhaust pressure, connect either a water colunm
or
PSI tube
to
the test part on the exhaust elbow as shown.
Check the exhaust back-pressure before the generator
is
put
into service. Measure the back-pressure after the engine has
reached its normal operating temperature, and at the point
where it
is
about to reach its rated load at either 1500 rpm
(for
50Hz applications) or 1800 rpm (for 60Hz applications).
Back-pressure should not
exceed
1.5
psi
(0.11
kg/em\
A water colunm can be made by taping one end
of
a clear
plastic tube along a yardstick and fitting the other end
of
the
tube with a
1/4" NPT pipe fitting.
Back-pressure should
not
exceed 27in (69cm) of water in the·
water colunm.
Engines
& Generators
11
MEASURING
EXHAUST
BACK
PRESSURE