2005 Ski-Doo REV Series Shop Manual, Page 107Get this manual
Section 03 ENGINES Subsection 05 (TOP END)
A02C2OA
TYPICAL 1Circlip break facing down
A02C2MA
Using square end of tool, push circlip in until it rests in groove
Hold tool firmly against piston then strike on round end of tool with plastic hammerCirclip will move from tool groove to piston groove
A01C02A