Ski-Doo Formula S 1998, Shop Manual

Page: 135 / 338

Section 04 ENGINE
Subsection 09 (CARBURETOR AND FUEL PUMP)
04-09-6
TYPICAL
1. Screw in and out until no cable free play exists
2. Check that throttle slide does not move
3. Idle speed screw completely unscrewed
Throttle Slide Adjustment
All Models
For maximum performance, correct carburetor
throttle slide adjustment is critical.
The following method should be used with engine
turned off:
– Idle speed screw must be completely un-
screwed. It must not contact throttle slide.
Turn the idle speed screw clockwise until it con-
tacts the throttle slide then continue turning 2 ad-
ditional turns.
Twin Carburetor Models Only
Repeat on the other one. This will ensure identical
throttle slide preliminary idle setting. Recheck car-
buretor synchronization. Adjust idle by turning
both idle speed screws of the same amount.
All Models
Throttle slide must be flush or 1.0 mm (.040 in)
lower than the top of carburetor
oulet bore (en-
gine side).
THROTTLE LEVER AGAINST HANDLE GRIP
1. Throttle cable adjuster
2. Throttle slide flush or 1.0 mm (.040 in) lower than carburetor
oulet bore (engine side)
Once carburetor adjustment is performed, check
that
with the throttle lever fully depressed ,
there is a free play between the carburetor cover
and top of throttle slide.
-
CAUTION
If the throttle slide rests against the carbure-
tor cover at full throttle opening, this will
create too much strain and may damage the
throttle cable or other components in throt-
tle mechanism.
;
WARNING
Ensure the engine is turned OFF, prior to per-
forming the throttle slide adjustment.
3
1
2
A01C33A
-
CAUTION
On twin carburetor models, make sure both
carburetors start to operate simultaneously.
Beside do not interchange carburetors, the
jetting may be different on each side. A red
dot is printed on one carburetor and on the
engine. Match the carburetor and the engine
dots when applicable.
-
CAUTION
On oil injection models, the oil injection
pump adjustment must be checked each
time carburetor is adjusted. Refer to OIL IN-
JECTION SYSTEM 04-06.
A01C3MA
1
2