2007-2008 Yamaha Phazer Venture-Lite 500 Factory Service Manual, Page 203Get this manual
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VALVES AND VALVE SPRINGS
After replacing the valve guide, reface the valve seatValve guide remover (4): 90890-04111, YM-04111 Valve guide installer (4): 90890-04112, YM-04112 Valve guide reamer