Yamaha DRAG STAR XVS650 (1997) [129/360] Valves and valve springs

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VALVES AND VALVE SPRINGS VALVE AND VALVE SPRING REMOVAL 1 Check Valve sealing Leakage at the valve seat Inspect the valve face valve seat and valve seat width Refer to INSPECTION Checking steps Pour a clean solvent into the intake and exhaust ports Check that the valve seals properly There should be no leakage at the valve seat 2 Remove Valve cotters NOTE ________________________________ Attach a valve spring compressor between the valve spring retainer and the cylinder head to remove the valve cotters Valve spring compressor YM 04019 90890 04019 VALVE AND VALVE SPRING INSPECTION 1 Measure Stem to guide clearance Stem to guide clearance valve guide inside diameter a valve stem diameter Out of specification Replace the valve guide Clearance stem to guide Intake 0 010 0 037 mm 0 0004 0 015 in Limit 0 08 mm 0 003 in Exhaust 0 025 0 052 mm 0 001 0 002 in Limit 0 10 mm 0 004 in 4 22

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