8. CYLINDER/PISTON Mongoose/KXR 90/50 Cylinder CYLINDER/PISTON (Mongoose/KXR 50) CYLINDER REMOVAL Remove the cylinder head. Remove the exhaust muffler. (See page 2-7) Remove the reed valve. (See page 5-16) Remove the cylinder. Remove the cylinder gasket. Do not pry between the cylinder and crankcase or strike the fins. Piston Piston Pin PISTON REMOVAL Remove the piston pin clip to remove the piston pin and piston. · Do not damage or scratch the piston. · Do not apply side force to the connect- ing rod when removing the piston pin. · Place clean shop towels in the crank- case to keep the piston pin clip from falling into the crankcase. Piston Pin Clip Spread each piston ring and remove by lifting it up at a point just opposite the gap. Remove the expander. 8-13