2002 Bombardier Quest 650XT Service Manual, Page 119Get this manual
Section 03 ENGINE Subsection 08 (CYLINDER AND HEAD)
Use the piston circlip installer (PN 529 035 765) to assemble the piston circlipCAUTION: Secure piston pin with new piston circlipsNOTE: Take care that the hook of the piston circlip is positioned properly
Inspection
RingPiston Groove Clearance Using feeler gauge measure each ringpiston groove clearanceIf the clearance is too large, the piston and the piston rings should be replacedRINGPISTON GROOVE CLEARANCE mm (in) NEW MINIMUM RECTANGULAR TAPER-FACE OIL SCRAPER RING 0.025 mm (.001 in) 0.015 mm (.0006 in) 0.020 mm (.0008 in)