8. CYLINDER HEAD/VALVES MXU 500 IRS Loosen and remove the eight camshaft holder Bolts bolts in a crisscross pattern in several steps. Loosen and remove the four camshaft holder Camshaft Holder Bolts/Washers bolts/washers in a crisscross pattern in several steps, then remove the camshaft holders. Suspend the cam chain with a piece of wire to prevent the chain from falling into the crankcase. Camshaft Holder Camshaft Holder Remove the camshafts. Camshafts 8-8