Yamaha MBK MW125 2014 Service Manual

CAMSHAFT5-192. Check:• Rocker arm shaftBlue discoloration/excessive wear/pit-ting/scratches → Replace or check the lubri-cation system.3. Measure:• Rocker arm inside diameter “a”Out of specification → Replace.4. Measure:• Rocker arm shaft outside diameter “a”Out of specification → Replace.5. Calculate:• Rocker-arm-to-rocker-arm-shaft clearanceTIPCalculate the clearance by subtracting the rock-er arm shaft outside diameter from the rockerarm inside diameter.Out of specification → Replace the defectivepart(s).EAS30270INSTALLING THE CAMSHAFT AND ROCKERARMS1. Install:• Bearing “1”(onto the cylinder head)TIPInstall the bearing so that the seal “a” is facingthe right side.2. Lubricate:• CamshaftRocker arm inside diameter9.985–10.000 mm (0.3931–0.3937 in)Limit10.015 mm (0.3943 in)Rocker arm shaft outside diame-ter9.966–9.976 mm (0.3924–0.3928in)Limit9.936 mm (0.3912 in)11aRocker-arm-to-rocker-arm-shaftclearance0.009–0.034 mm (0.0004–0.0013in)Limit0.080 mm (0.0032 in)Recommended lubricantCamshaftMolybdenum disulfide greaseCamshaft bearingEngine oila1