7. CYLINDER HEAD/VALVES ATV 300/250 Remove the four camshaft holder nuts and washers. Diagonally loosen the cylinder head nuts in 2 or 3 times. Remove the camshaft holder and dowel pins. Nuts and Washers Camshaft Holder Camshaft Remove the camshaft gear from the cam chain and remove the camshaft. Rocker Arms Stop Plate CAMSHAFT HOLDER DISASSEMBLY Take out the valve rocker arm shafts. Remove the valve rocker arms, arm shafts and stop plate. Rocker Arm Shafts 7-5