2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 158Get this manual
12Place the gasket, recoil starter assembly, and cover into position on the left-side cover making sure the single washer is properly positioned; then install and tighten the four cap screws to specifications Installing Top-Side Components
APiston BCylinder
NOTE: If the piston rings were removed, install them in this sequenceMD1343
! CAUTION
Incorrect installation of the piston rings will result in engine damage
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 not overlapStagger the end gaps of the upper and lower thin oil rings according to the illustration
1Install the piston on the connecting rod making sure there is circlip on each side and the open end of the circlip is directed upwards or downwardsNOTE: The piston should be installed so the arrow points towards the exhaust