2004 Skidoo Tundra Skandic Series Service Manual, Page 131Get this manual
Section 04 ENGINE Subsection 03 (443 AND 552 ENGINE TYPES)
443 Engine 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