2001 Ski-Doo Factory Shop Manual Volume One, Page 108Get this manual
Section 04 ENGINE Subsection 02 (377, 443 AND 503 ENGINE TYPES)
Mount piston over connecting rod with the letters "AUS" (over an arrow on the piston dome) facing in the direction of exhaust port.AUS
377 Engine To center the piston pin with the connecting rod bearing, use centering tool (PN 529 009 100)
529 009 100
A01C01A
1Exhaust
Install shouldered sleeveA01B1SA
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 Models 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)Insert circlip in tool at an angle