1978 Ski-Doo Shop Manual, Page 106Get this manual
SECTION 04 .SUB-SECTION 01' (ENGINE TOLERANCES MEASUREMENT)
Position crankshaft assembly into crankcase lower half, making sure that retaining washers are correctly seated into the groovesGently tap crankshaft magside blade until p.T.aside bearing bears against retaining washer
P.T.Oside retaining washer