1996 Ski-Doo Shop Manual, Volume 1, Page 325Get this manual
Se ionSub-Section 02 (FRAME)
FRAME COMPONENT REPLACEMENT
S-series CAUTIONDo not attempt to drill hardened self-piercing rivetsAlways grind rivet heads for removalRear Cap Grind rivet heads from top of rear cap and underneath for side retaining rivetsRivets heads ground