2007-2008 Yamaha Phazer Venture-Lite 500 Factory Service Manual, Page 205Get this manual

2007-2008 Yamaha Phazer Venture-Lite 500 Factory Service Manual, Page 205

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VALVES AND VALVE SPRINGS

For the best lapping results, lightly tap the valve seat while rotating the valve back and forth between your hands Apply fine lapping compound to the valve face