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as needle
Caution: Never operate vehicle with air
Intake tube removed as serious
camace may occur.
Note: Do not close too
needle seat can be damaged.
For final adjustment, start engine and al-
low
it
to warm
Turn Idle Mixture Screw
until
maximum
R.P.M.
and
obtain
a
idle and
a
fast response of
the
to
throttle.
idie
Speed AdjustmiO\nt
Turn the Idle
wise to increase
clockwise to decrease.
hold carburetor lever in
cable down-
Hetiehten screw.
Turning screw clockwise
a leaner
mixture,
air/less fuel), counter-
clockwise,
3
richer mixture (less air/more
fuel ).
Before starting
carbure-
tor throttle lever must
return
to idle
tiol"i
contacting with the
of Idle
Speed
Screw. Never start en-
unless this situation is
lIerified.
Idie
Mixture
Adjustml~!'!t
A
adjustment (with
off),
should be made by first turning idle Mix-
ture Screw
clockwise until closed,
Back of]' screw
of a turn counter-
clockwise,
bar.
for maximum
loosen
where cable
carbure-
Hold throttle lever to handle-
tor
lever,
Carburetor Adjustment
The carburetor
for the Ski-
Doo snowmobile are: Maximum Throttle
Opening, Idle Speed Mixture and Idle
Speed.
Note:
A
ex ists between each
correct one without
Maximum
Throttle
Openiii1g
With engine
unscrew
Idle
Adjusting Screw until a gap exists be-
tween screw end and carburetor shah la-
ver. Depress the throttle lever at handle-
bar and hold.
shouId be hori-
zontal when the lever
touches the
handlebar
To
16
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