2004 Ski-Doo REV Series Factory Service Manual, Page 124Get this manual
Section 04 ENGINE Subsection 01 (593, 593 HO, 593 HO SDI AND 793 HO ENGINE TYPES)
Insert circlip into support so that, when installed in piston groove, the tab faces upwardA32B0DA
1Groove
A32B0AA
With round end of pusher, position circlip perpendicularly to the support axis
A32B0EA
CIRCLIP READY TO BE INSTALLED ON PISTON