Westerbeke 9.0 BCG Technical Manual page 172

Electric Choke
The electric choke uses a
12
volt heating element which opens the choke automatically once the engine
starts and is running.
NOTE: Some hunting will be present when the generator is first started, when the choke is
on, and when the generator has no load on it.
The choke is adjusted with the engine off and cooled.
Adjust the choke by loosening the three cover-secur-
ing screws and rotating the cover clockwise to EN-
RICH the choke and counterclockwise to LEAN the
choke. The choke is initially set at the factory for an
average of 70° F
(210
C) room temperature.
The choke may need readjustment at engine commis-
sioning for the ambient temperature of the area the en-
gine is operating in.
The choke index mark is located on the choke cover
lower right inboard side.
CAUTION
LEAN
The choke housing will normally get hot during engine operation.
ENR ICH
NOTE: When initially starting the engine (commissioning) or after servicing the fuel system,
prime the engine's fuel system by using the engine mounted fuel pump. Prime the fuel sys-
tem by depressing the control panel's ON switch. To prevent the unwanted activation of the
carburetor's electric choke, unplug the
12
volt (
+ )
lead at the electric choke during this prim-
ing operation and reconnect it after priming to start the engine.
Electric Fuel Pump
The engine-mounted electric fuel pump supplies fuel to the
engine's carburetor during engine operation. A cleanable filter
screen is contained in the pump's base.
Remove the base by placing a wrench on the hex nut and twisting
it loose from the bayonet fittings. Clean the screen as needed. A
new base gasket #34706
must
be installed each time the pump
base is removed and reinstalled.
IWARNINGI
Shut off the fuel service valve at the engine when servicing
the fuel system. Take care in catching any fuel that may spill
from within the pump when the base is removed. Do not
allow any smoking, open flames, sparks or other sources of
fire near the fuel system when servicing. Ensure proper ven-
tilation exists when servicing the fuel system.
Westerbeke Generators
166