1972 Ski-Doo Shop Manual, Page 156Get this manual
2-03-16 INSTALLATION (All models) To install engine on vehicle inverse removal procedureHowever, special attention must be brought to the following: 1Torque the engine mount nuts to 22 25 ftllbs2Position fuel lines between engine SUPPO" and crankcaseThe longest fuel line is used for the fuel return l1NO CYLINDER