Carburetor Adjustments - BOMBARDIER ski-doo Tundra Scandic 2004 Series Shop Manual

To Adjust Height H
– Bend the contact tab of float arm until the spec-
ified height is reached.
A00C03A
1. Contact tab

CARBURETOR ADJUSTMENTS

Adjustments should be performed following this
sequence:
– air screw adjustment
– throttle slide height
(preliminary idle speed adjustment)
– throttle cable adjustment
– carburetor synchronization
(dual carburetor models)
– final idle speed adjustment (engine running)
– oil pump and carburetor synchronization.
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A02C09A
1. Idle speed screw
2. Air screw
MMR2004-120_04_11A.FM
Subsection 11 (CARBURETOR AND FUEL PUMP)
6, Air Screw
Completely close the air screw (until a slight seat-
ing resistance is felt) then back off as specified.
Turning screw in clockwise enriches mixture and
1
conversely, turning it out counterclockwise leans
mixture.
Refer to TECHNICAL DATA for the specifications.
Throttle Slide Height
Preliminary Idle Speed Adjustment
Hook throttle cable into the needle retainer plate.
NOTE: Do not obstruct hole in throttle slide when
installing needle retaining plate. This is important
to let air escape through and thus allow a quick
response.
A00C1TA
CENTER POST TYPE
1. Throttle cable
2. Needle retaining plate
3. Throttle slide
Make sure the nylon packing no. 4 is installed on
all applicable throttle slides.
2 CAUTION: Serious engine damage can occur if
this notice is disregarded.
Section 04 ENGINE
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2
3
04-11-7