1978 Ski-Doo Shop Manual, Page 235Get this manual
SECTION 04 SUB-SECTION 05, (CARBURETOR)
tDepress here TOO HIGH
REMOVAL
Remove or disconnect the following from carburetor:air silencerchoke cablethrottle cablefuel lines and pulsation line Open lock tabs then remove nuts securing carburetor
then push tab down
Depress here TOO LOW
DISASSEMBLYASSEMBLY
CDTest main nozzle check valve operation by alternately applying pressure and vacuum with the mouth on the section located on carburetor venturi sideThe check valve must hold under pressure and release under vacuum
CLEANINGINSPECTION
The entire carburetor should be cleaned with general purpose solvent and dried with compressed air before disassemblyWARNING: Solvent with low flash point such as gasoline, naphtha, benzol, etc should not be used as they are flammable and explosiveCarburetor body and metal parts should be cleaned in carburetor cleaner solution following manufacturer's instructionsCheck inlet needle tip conditionIf worn, the inlet needle and seat must be replaced as matched setInspect all diaphragmsThey should be free of holes or imperfectionsReplace as neededAfter assembly, leak test carburetor as follows: with both idle speed and high speed adjustment screws opened and fuel return outlet plugged, connect leak detector to the fuel inlet(See Tools Section),