BOMBARDIER ski-doo Tundra Scandic 2004 Series, Shop Manual

Page: 208 / 427

Section 04 ENGINE
Subsection 11 (CARBURETOR AND FUEL PUMP)
04-11-4
MMR2004-120_04_11A.FM
IDENTIFICATION
All carburetors are identified on their body.
1. Identification: 34-482
CARBURETOR CIRCUIT
OPERATION VERSUS THROTTLE
OPENING
The following illustration shows the part of the car-
buretor which begins and stops to function at dif-
ferent throttle slide openings.
Note that the wider part of symbol corresponds to
the opening mostly affected. For instance, throttle
slide cut-away begins to function at closed posi-
tion but it is most effective at 1/4 opening and de-
creases up to 1/2 opening.
VIEW FROM AIR INTAKE OPENING
NOTE: For proper calibration refer to TECHNICAL
DATA and to SPARK PLUG.
NOTE: For high altitude regions, a Service Bulletin
will give information about calibration according to
altitude and temperature.
REMOVAL
Tundra and Skandic LT/WT/SWT
Remove air silencer.
All Models
Disconnect fuel inlet line.
Disconnect primer line from carburetor on some
models.
Disconnect choke cable on some models.
Unscrew carburetor cover no. 1 then pull out
throttle slide no. 5 from carburetor.
Disconnect throttle cable from throttle slide.
Untighten rubber flange clamps then remove car-
buretor from engine.
CLEANING AND INSPECTION
The entire carburetor should be cleaned with a
general solvent and dried with compressed air be-
fore disassembly.
CAUTION: Heavy duty carburetor cleaner may
be harmful to the float material and to the rub-
ber parts, O-rings, etc. Therefore, it is recom-
mended to remove those parts prior to cleaning.
Carburetor body and jets should be cleaned in a
carburetor cleaner following manufacturer’s in-
structions. Replace any jets having gum or varnish
on their surfaces.
Check inlet needle tip condition. If worn, the inlet
needle and seat must be replaced as a matched
set.
A01C59A
1
Throttle slide openings
Pilot jet and air screw 13,6,
Throttle slide cut-away 5,
Needle taper and needle position 3,
Needle jet 14,
Main jet 8,
A00C04A
Wide
open
Close
3/4
1/2
1/4
1/8

WARNING
Exercise care when handling throttle slide.
Scratches incurred may cause throttle slide to
stick open in operation.

WARNING
Solvent with a low flash point such as gaso-
line, naphtha, benzol, etc., should not be used
as they are flammable and explosive.