1978 Ski-Doo Shop Manual, Page 109Get this manual
SECTION 04 SUB-SECTION 02 (ENGINES)
ENGINE SUPPORT AND MUffLER
REMOVAL FROM VEHICLE
Remove or disconnect the following then lift engine from vehicle Pulley guard Drive belt Muffler Choke knob Decompressor Throttle cable Fuel lines Electrical connector Separate steering column support at upper column Engine mount nuts