Service manual

FUEL INJECTION PUMP/FUEL LIFT PUMP
4. Turn the crankshaft in the direction of normal rotation
until the No.1 piston is at
IDe by referencing the
indicator on the valve stem.
a. The measuring device indicator needle should move
1.00
mm from the zero setting.
Beginning of Static Injection
71 an1C Cam lift 1.00 mm (0.0394 in)
NOTE: If the measuring device show movement at the plunger
to be more
or less than specified above, the injection pump
must be adjusted to correct the movement.
S. Adjusting the injection pump.
a. Disconnect the fuel supply and return line connections
from the pump.
h. Disconnect the support bracket at the back
of the
injection pump as
it attaches to the lube oil
filter adapter.
c. Loosen the two injection pump hold down nuts that
secure the injection pump to the engine.
d. Rotate the injection pump either towards the engine
or
away from the engine to adjust the measuring device
indicator to show
1.0 mm of movement.
e.
Secure the pump by tightening the two
hold down nuts.
f. Remove the measuring device and replace the bolt
and gasket and reattach all fuel lines using new
sealing washer.
6. Installing injection pump.
Install the injection
pump in the reverse order of removal,
noting the following points:
a. Tighten the lock nut of injection pump drive gear to
the specified torque.
Tightening Torque - Injection Pump
71 ani C 4.0 - 7.4 m-kg (29 - 51 ft-lb)
h. After the injection pump has been installed, loosen the
overflow valve, and bleed the
air by operating the
priming pump.
INJECTION PUMP
FUEL LIFT PUMP (Early Models)
The Fuel Lift pump should be cleaned and repainted.
Install a new filter as illustrated and clean the ground wire
end terminal.
FUEL LIFT PUMP
MAGNET ____ I~'-+~"\
GROUND
Troubleshooting
This lift pump operates during the start sequence when pre-
heat is depressed.
Simulate a start and depress preheat, the
pump should produce a
clicking sound indicating the piston
in the pump is operating.
If no clicking is heard, check that
there is 12 volts
at the pump connection and that the pump is
properly grounded.
1. Test the pump by connecting a battery and fuel line as
illustrated. Fuel delivery
must be 225 cc (0.5 pints) or
more every 15 seconds.
FUEL LIFT PUMP
r
SUCTION HEAD
APPRDX. 500 mm
TESTING THE FUEL PUMP
CYLINDER
NOTE: Later model WESTERBEKE engines and generators
use a solid state fuel lift pump that requires no maintenance.
This lift pump can also
be adapted to replace the pump
shown above.
FUEL LIFT PUMP
Engines & Generators
31