1997 Ski-Doo Factory Shop Manual Volume Three, Page 206Get this manual
Section 08 BODYFRAME Sub-Section 03 (FRA E) -
CAUTION
High speed drilling will cause excessive heat hich ay destroy the cutting edge of the bit, therefore avoid using pneu atic drills
Grinding Procedure
Rear Cap Grind rivet heads from top of rear cap and underneath for side retaining rivets2