1989 Ski-Doo Repair Manual, Page 235Get this manual
Section 02 Sub-section 11
(AIR INTAKE SILENCERFUEL TANK)
WARNING: If this procedure is disregarded, throttle might be half-open at normally closed position and the engine will speed up when starting
13,14, O-ringretaining ring
Locate O-ring outside of carburetor cover and retaining ring inside
Throttle cable housing Carburetor cover