AD Boivin 2002 Snow Hawk, Service Manual

Page: 34 / 173

FUEL SYSTEM 3 - 12
Carburetor synchronization
Both carburetor slides must start opening simultaneously.
Completely unscrew the idling speed adjustment screw from the
two carburetors.
1. Idling speed adjustment screw
2. Idling mixture adjustment screw
Loosen the lock nut of the throttle cable adjustment mechanism,
and screw in the adjustment mechanism until the slide touches
the bottom of the carburetor. Proceed in this way for both
carburetors.
Loosen the lock screw on the cable adjustment mechanism, but
without lifting the slide. Proceed carefully with both carburetors,
and then tighten the lock nuts. Both carburetor slides must start
opening simultaneously. Turn the accelerator handle to make
sure it is functioning properly and if need be, turn the cable
adjustment mechanism to eliminate any excessive play.
1. Screw up or down until there is no play in the cable.
2. Make sure the slide stays absolutely still.
3. Idling speed adjustment screw completely
unscrewed.
Adjust the height of the slide, raising it by 1.8 mm by turning the
idling screw.
1. Gauge (1.9 mm) used to adjust the height of the
accelerator slide.
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CAUTION
Never put anything inside the carburetor while the engine
is running.
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WARNING
Before starting the engine to proceed with the
adjustments, make sure the parking brake is securely
engaged.