2007 Arctic Cat ATVs factory service and repair manual, Page 282Get this manual
AInstall ring expander (4) in the bottom groove of the piston; then install the thin oil rings (3) over the expander making sure the expander ends do notoverlap# Compression Ring End Gap #3
28Place the recoil starter assembly into position on the left-side cover; then tighten four cap screws to specifications
Oil Ring Expander End Gap
Compression Ring End Gap and
ATV-10851
BStagger the end gaps of the upper and lower
thin oil rings according to the illustrationu u
1 NOTE: Note the direction of the exhaust side of the piston (5) for correct ring end gap orientation
Installing Top-Side Components
APiston BCylinder
C, Install the compression rings (1 and 2) so the letter on the top surface of each ring faces the dome of the pistonRotate the rings until the ring end ga are on directly opposite sides of the piston see illustration)