2004 650 Twin Arctic Cat ATV Service Manual, Page 76Get this manual
3Apply clean engine oil to the piston skirts and cylinder walls; then install the cylinders and clamp (A) (rear only) and tighten the cylinder cap screws (B) to 1.0 kg-m (87 inlb)Install the cam chain guide (C) and the oil pipe (D) ATV2098
! CAUTION
Incorrect installation of the piston rings will result in engine damageKX361
1Install the pistons on the connecting rods making sure there is circlip on each side and the open end of the circlip (A) does not align with the notch (B) in the pistonNOTE: The pistons should be installed so the is directed toward both front and rear pistons
4Locate alignment pins (A) as shown; then place new head gasket (B) into position and install the oil pipe (C) and camshaft chain guides (D)