Operator`s manual

Adjust each valve's clearance by inserting a 0.010
inch (0.25 mm) feeler gauge between the rocker arm
and the valve stem.
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 timing as
follows:
NOTE: The fuel shut-off lever must be in the
RUN position while making the adjustment or
no fuel will flow from the fuel injection
pump.
Refer to the illustration below when servicing the
fuel injection pump. First remove the high-pressure
fuel line from between the No. I injector and the No.
I fuel delivery valve holder. Remove the No. I fuel
delivery valve holder and remove the delivery valve
spring beneath the holder. 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.
RDJUST VALVES TO 0.010 INCHES
(0.25 1(10
DELIYEiY YRLYE HOLDER
DELIVERY V~LVE SPRIN£
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cunOl
PUIlO"
PlUN6ER SPIIN6
Fun
CexUOl
Rlicr:
Rotate the engine's crankshaft in its normal direction of rotation to position piston No. I at the beginning
of its compression stroke.
Move the throttle lever to its full open position and operate the electric lift pump.
Slowly rotate the
crankshaft clockwise (as viewed from the front), catching the fuel from the
No. I 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° 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 (0.01 mm) changes the injection by
approximately one degree. To advance the timing, 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.
67
WESTERBEKE GENERATORS