6. CYLINDER HEAD/VALVES ZING II 125 CAMSHAFT HOLDER INSPECTION Inspect the camshaft holder, valve rocker arms and rocker arm shafts for wear or damage. If the valve rocker arm contact surface is worn, check each cam lobe for wear or damage. Rocker Arm Shafts Measure the I.D. of each valve rocker arm. Service Limits: IN 12.10mm replace if over EX 12.10mm replace if over Measure each rocker arm shaft O.D. Service Limits: IN 11.90mm replace if below EX 11.90mm replace if below Cam Chain Tensioner Slipper CYLINDER HEAD REMOVAL Remove the camshaft. ( 6-4) Remove the carburetor and intake manifold. Remove two bolts on the cylinder head. Remove the cylinder head. Bolts Cam Chain Cylinder Head Gasket Remove the dowel pins and cylinder head gasket. Remove the cam chain guide. Remove all gasket material from the cylinder head mating surface. Be careful not to drop any gasket material into the engine. Cylinder Cam Chain Guide 6-6