1972 Ski-Doo Shop Manual, Page 150Get this manual
TWO CYLINDER 4Apply 700 adhesive over the contact surface of lower crankcase half and position upper haff in location (fig2325)NOTE: On engine types equipped with spacers, ensure that tlie four (4) spacers are in position between crankcase and engine supports
8Slide the needle cages into the connecting rods9Identify each piston as to correct cylinder installation position as follows: (a) Place the piston on the connecting rodThe mark AUS must point to the exhaust side of crankcase(b) The piston is correct for that cylinder when the piston window is aligned with the transfer port of the crankcase surface and when the gudgeon pin orifice is aligned with the needle cageconnecting rod (fig2327)
5Place the washers and nuts on crankcase studs and following the sequence shown in figure 2-3-26 cross torque the crankcase nuts to 10 ftlbs then to 16 ftllbs