2003 Ski-Doo ZX Series Factory Shop Manual, Page 116Get this manual
Section 04 ENGINE Subsection 02 (377, 503 AND 552 ENGINE TYPES)
Install shouldered sleeve
529 009 100
A01B1SA
A02C2IA
NOTE: The circlip on the opposite side can be installed before pin installation, the tool will easily go outUse piston pin puller (PN 529 035 503) to install piston pin that cannot be installed as described aboveAll Engines To minimize the effect of acceleration forces on circlip, install each circlip so the circlip break is at o'clock as illustratedUse piston circlip installer (PN 529 035 561 for 503 and PN 529 035 562 for 552 engine)Insert circlip in tool at an angle