7. CYLINDER HEAD/VALVES (Mongoose/KXR 90) Mongoose/KXR 90/50 Nuts and Washers Remove the four camshaft holder nuts and washers. Diagonally loosen the cylinder head nuts in 2 or 3 times. Camshaft Holder Remove the camshaft holder and dowel pins. 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 7-5