2004 Skidoo ZX Series Service Manual, Page 139Get this manual
Section 04 ENGINES (2-STROKE) Subsection 02 (593, 593 HO SDI, 693 AND 793 SDI 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