6. 4-STROKE: CYLINDER HEAD/VALVES VITALITY 50 Camshaft Remove the camshaft gear from the cam chain and remove the camshaft. Rocker Arms CAMSHAFT HOLDER DISASSEMBLY Take out the valve rocker arm shafts using a 5mm bolt. Remove the valve rocker arms and arm shafts. Rocker Arm Shafts CAMSHAFT HOLDER INSPECTION Camshaft Holder Rocker Arm Inspect the camshaft holder for wear or damage. Inspect the rocker arm shaft for blue discoloration or grooves. If any defects are found, replace the rocker arm shaft with a new one, then inspect lubrication system. Rocker Arm Rocker Arm Shafts 6-6