1978 Ski-Doo Shop Manual, Page 233Get this manual
SECTION 04 SUB-SECTION 05, (CARBURETOR)
INSTALLATIONADJUSTMENT
To install carburetor on engine, inverse removal procedure_
Make sure the fuel return line is correctly identified and connected to the fuel tankNOTE: The fuel return line inlet on the tank connector is identified with the letters "IN"CAUTION: Lock tabs should be replaced if bent more than three (3) timesIf in doubt, replace
Maximum Throttle Opening Adjustment
With engine off and air silencer removed, depress throttle lever at handlebar and holdThrottle butterfly should be horizontal when the lever gently touches the handlebar gripTo adjust for maximum opening, loosen screw at point where cable joins carburetor leverClamp throttle lever to handlebarWith finger, hold carburetor throttle lever in fully open position (UP), pull cable until taut and retighten screwUnclamp throttle lever from handlebar and install air silencer WARNING: Before starting engine, carburetor throttle lever must return to idle position (throttle shutter closed)Do not start engine unless this is verified(