8. CYLINDER/PISTON ATV 150/125 Bolt CYLINDER REMOVAL Turn the cam chain tension screw clockwise to tighten it. Remove the two bolts on the cam chain tension. Cylinder Remove the cylinder head. Remove the cam chain guide. Remove the cylinder base bolts. Remove the cylinder . Remove the cylinder gasket and dowel pins. Clean any gasket material from the cylinder surface. Dowel Pins Piston PISTON REMOVAL Remove the piston pin clip. Place a clean shop towel in the crankcase to keep the piston pin clip from falling into the crankcase. Press the piston pin out of the piston and remove the piston. Piston Pin Clip 8-5