7. CYLINDER HEAD/VALVES MXU 300/250 Cylinder Head Cover Bolts CYLINDER HEAD COVER REMOVAL Remove fuel tank. (Refer to the chapter 5) Disconnect the crankcase breather hose and pair control valve hose from the cylinder head cover. (Refer to the chapter 6) Remove the four bolts at the cylinder head cover, then remove the cylinder head cover. Nuts O-ring INSTALLATION Install a new cylinder head cover O-ring and install the cylinder head cover. Install and tighten the cylinder head cover bolts. Torque: 1 kgf-m (10 Nm, 7.2 lbf-ft) Be sure to install the O-ring into the groove properly. Bolt CAMSHAFT/CAMSHAFT HOLDER REMOVAL Remove the cylinder head cover. (Refer to the cylinder head cover removal) Remove the cam chain tensioner cap bolt and the O-ring. 7-4