1986 Ski-Doo Factory Shop Manual, Page 64Get this manual
Section 02 ENGINE Sub-section 03 (377 ENGINE TYPE)
INSTALLATION ON VEHICLE
To install engine on vehicle, reverse removal procedureHowever, pay attention to the following:Check tightness of engine mount nuts- Verify throttle cable condition then after throttle cable installation, check maximum throttle slide opening- Check pulley alignment and drive belt tension