2007-2008 Yamaha Phazer Venture-Lite 500 Factory Service Manual, Page 206Get this manual

2007-2008 Yamaha Phazer Venture-Lite 500 Factory Service Manual, Page 206

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VALVES AND VALVE SPRINGS
Compressed valve spring force (installed): Intake: 120.7138.9 at 30.13 mm (12.314.2 kg at 30.13 mm, 27.131.2 lb at 1.19 in) Exhaust: 150.6173.2 at 30.50 mm (15.417.7 kg