2006-2008 Yamaha RS, Vector, Rage Factory Service Manual, Page 438Get this manual
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GEAR SELECTION 4 Secondary spring twist angle Seat Sheave Torque cam (secondary spring seat) 10 20 30 40 50 60 70 80 90
Identification mark 8BVFA 8BV71 8BV51 8BV31 8BV11 8BV91