Westerbeke BCG4.0KW Operator's Manual page 79

Carburetor Adjustment
1. Idle Mixture Jet
Disconnect the throttle linkage arm from the governor control arm and reduce the engine's speed with the
idle stop screw. Turn the idle mixture screw clockwise (In) until the engine skips; back the screw out
(counterclockwise) slowly until the engine smooths then skips again; then turn the screw clockwise (in) 1/4
to 1/2 of a turn. The idle mixture should be satisfactory at this setting.
2. Run Mixture Jet
This mixture jet is pre-sized at the factory and is not adjustable. An adjustment to the idle jet screw, while
the unit is operating at 1800 rpm, will have an affect on the unit's performance. Refer to the "Governor Ad-
justments" section of this manual for instructions on how to adjust the engine's speed, page 74.
Westerbeke Generators
SCREENED
AIR
(LEANER
THROTTlE
SlOP
~~~Yl~~~~~~~
FUEl
SOLENO D
IDLE MIXTURE JEI
76