1978 Ski-Doo Shop Manual, Page 252Get this manual
SECTION 04 SUB-SECTION 06, (AIR INTAKE SILENCER, FUEL TANK)
(DAt assembly on intake manifold, apply light coat of silicone sealant on rubber flange mating surface0Always bend lock tabs over screws and replace if they seem wornAlways reposition spring clips after any repair to prevent possible leaks
Carburetor throttle slide adjustment
With the throttle cable adjuster jam nut unlocked, press the throttle lever against the handlebar gripUnscrew the cable adjuster by hand to obtain maximum carburetor slide opening(With the air silencer removed, check with your finger if the carburetor slide is well seated against the carburetor top portion)Then, screw the cable adjuster in two turns in order to nullify any possible tension on the throttle cable and tighten the cable adjuster jam nut