2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 213Get this manual
BInstall 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 gaps are on directly opposite sides of the piston (see illustration)NOTE: On the 500, the chrome (silver) ring should be installed in the top positionOn the 650 H1, the ring with the orientation mark (MTOP) should be installed in the second (middle) groove and the ring with the orientation mark (M) should be installed in the first (top) grooveCC032D
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-1024
ATV-1024A