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Просмотр инструкции снегоходы Ski Doo MX Z 2005, страница 197
Section04FUELSYSTEM
Subsection 02 (CARBURETORS, THROTTLE AND CHOKE CABLES)
Float Bowl
Unscrew drain plug of float bowl. Recover the re-
maining fuel in a container.
Unscrew the 4 screws retaining the float bowl to
the carburetor body. Remove float bowl.
NOTE: Upon float bowl removal, make sure not to
drop carburetor floats.
Needle Valve Assembly
Remove float bowl as explained above.
Pull out pin retaining float arm to carburetor body.
Remove float arm.
Unscrew needle valve.
Pilot Jet
Remove float bowl as explained above.
Unscrew pilot jet using narrow screwdriver from
carburetor tool kit (P/N 404 112 000).
Main Jet
Remove float bowl as explained above.
Unscrew main jet from carburetor body.
NOTE: To replace main jet by a different size, main
jet is accessible through the drain plug without
removing float bowl.
CARBURETOR ADJUSTMENTS
NOTE: Carburetor is calibrated at the factory for a
temperature of - 20°C(0°F) at sea level. For colder
temperature or high altitude applications, carbure-
tor must be recalibrated. A Service Bulletin gives
information about carburetor calibration according
to altitude and temperature.
Adjustments should be performed following this
sequence:
– float arm adjustment
– e-clip and needle
– air screw adjustment
– throttle slide height (preliminary idle speed ad-
justment)
– throttle cable adjustment
– carburetor synchronization
– idle speed adjustment (engine running)
CAUTION: Oil pump cable must be readjusted
whenever throttle cable or idle speed adjust-
ment are changed, otherwise serious engine
damaged may occurs.
Float Arm
CAUTION: Spark plugs will foul if float is ad-
justed too low. Engine may be damaged if float
is adjusted too high.
Correct fuel level in float chamber is vital toward
maximum engine efficiency. To check for correct
float level proceed as follows:
– Make sure that float arm no. 9 is symmetrical
— not distorted.
– Remove float bowl and gasket from carburetor.
– With carburetor chamber upside-down on a lev-
el surface, measure height H between bowl
seat and top edge of float arm. Keep ruler per-
fectly vertical and in line with main jet hole.
A01C5AC
1
A
TYPICAL — VM TYPE
1. Measure from top of float arm
A. Float height (including float arm thickness)
178 mmr2005-077
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