Installation manual
ENGINE
ADJUSTMENTS
NOTE:
WESTERBEKE recommends that the following engine adjust-
ments.
be perfon:nf!d
by
a competent engine mechanic.
The
information
below
is
p~ov~ded
~o
assist the mechanic.
Injection
Pump
Timing
Adjustment
(Spill
Timing)
If
your engine's fuel injection timing is not properly adjusted,
the engine will not operate properly, and may be difficult to
start. Have the injection pump delivery rate checked by a
well-established fuel injection shop. Adjust the injection as
follows:
NOTE:
The
injection pump fuel rack needs
to
be
in
the full
fuel delivery position when peiforrning this spill timing.
To
do
this,
unscrew the fuel shut
off
solenoid and remove the
side cover
to
expose the injection pump fuel
rack.
Manually
move the fuel rack
to
the
full fuel delivery position (move
fully
to
the left) secure it
in
this position then proceed.
1.
Remove the high pressure fuel line from between the
No.1
injector and the
No.1
fuel delivery valve holder.
2. Remove the No. 1 fuel delivery valve holder over
"0"
ring and remove the delivery valve spring beneath
the holder.
3.
Reinstall only the delivery valve holder and reattach the
high pressure fuel line to the delivery holder. Attach
it
so
that the end that would connect
to
the fuel injector is
pointing away from the engine fuel will flow from this
line during the timing check.
Rotate the engine's crankshaft in its normal direction
of
rotation
to
position piston the No. 1 at the beginning
of
its
compression stroke.
Connect
DC
power to the electric lift pump. Slowly rotate
the crankshaft clockwise (as viewed from the front), catching
the fuel from the No. 1 fuel line, until the instant the fuel
completely stops flowing (no drips). At this instant, the
16° BTDC timing mark on the crankshaft pulley should
be
directly aligned with the timing indicator on the front
of
the
gear case
± .5 degrees.
If
the specified injection timing (16
0
BTDC) cannot be
attained, adjust the timing by
increasing or decreasing the
thickness
of
shim material under the injection pump's
mounting
flange
to
change the injection timing point.
Changing the shim thickness by
0.004
inch (O.Olmm)
changes the injection timing by approximately one degree.
To advance the
tirriing, decrease the shim thickness, as
required.
To
retard the timing, increase the shim thickness,
as
required. Refer to your Generator's Parts List for shim part
numbers.
NOTE:
The
timing for models BCD and BCDA is
18°.
IT
MARK
ON
PULLEY
DELIVERY
VALVE
H
BARREL.
PLUNGER
CONTROL
PINION
GEAR
PLUNGER
TIMING
POINTER
Engines & Generators
27·
FUEL
,...1\.-\---.-
CONTROL
TAPPET
TIMING
MARKS
RACK
CRANKSHAFT
PULLEY