1974 Ski-Doo Shop Manual, Page 102Get this manual
CD When installing cylinder and or cylinder head, the cylinder aligning tool must be used to ensure sealing of intake manifold and cylindersSee Tool Section)Install exhaust manifold on exhaust socket then install aligning bar and torque distance nut to 14-16 ft-IbsCross torque cylinder head nut to 14-16 ft-IbsRemove aligning bar and exhaust manifold'
At assembly, position magneto on crankshaft with the keyway and the cam notch position as illustrated
Note: Torque each cvlinder head individuallvAt assembly, torque to 14-16 ft-Ibs
0CDAt assembly, apply small amount of low temperature grease into spring seatingAt assembly, apply Loctite "Lock'n Seal" on retaining screw threadsWhenever coil is replaced, the air gap (distance between magnet and armature end) must be adjustedTo check air gap, insert feeler gaugeof correct thickness (0.31 mm.012"-0.45 mm.018") between magnet and armature ends