1978 Ski-Doo Shop Manual, Page 110Get this manual
SECTION 04 SUB- SEC ION 02 (ENGINES)
BOTTOM END
72 3' 4: 56 891017 72' 13(P TOside) Crankcase half (Mag side) If Crankcase ha CrankshaftPolvmid ring Beanng Shimts) Dowel tube Wire gram met Stud Gasket Oil seal Bolt or nut Lockwasher (cvlinderl (head) Nut (head) Distance sleeve Stud Lockwasher Nut