2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 340Get this manual

2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 340

19Place the gasket and recoil starter assembly into position on the left-side cover; then tighten four cap screws to specifications
install them in this sequence 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 illustrationFI138A 2Place the two alignment pins into positionPlace the cylinder gasket into position; then
place piston holder (or suitable substitute) beneath the piston skirt and square the piston in respect to the crankcase ATV-1085B
NOTE: Note the direction of the exhaust side of the piston (5) for correct ring end gap orientation BInstall the middle ring