1980 Ski-Doo Shop Manual, Page 131Get this manual
SECTION 03 SUB-SECTION 02, (ENGINES)
For proper position of noise dampersrefer to the following illustrations
NOTE: Once circlips are installedturn each circlip
so the circlip break is not directly on piston notchRemove any burrs from piston caused through circ!ip installation using very fine emery clotch
Clfclip break
Install intake manifold as per the following illustration