Yamaha 2010 FX Nytro FX10X Service Manual page 427

Secondary sheave spring
Spring rate
Part No. N•mm/rad
(kg•mm/rad)
90508-500B1 6003 (613)
90508-536A9 7147 (729)
90508-556A2 8314 (848)
90508-556A7 9460 (965)
90508-60012 11876 (1211)
90508-60007 12654 (1290)
Secondary spring twist angle
Seat
Sheave
1
2
3
Torque cam (secondary spring seat)
Identification mark
Identification mark
8BVFA
8BV71
8BV51
8BV31
8BV11
8BV91
Preload
N/mm (kg/mm) Color
(lb/in)
6.2 (0.63), 35.40 Brown 5.0 (0.197)
7.3 (0.74), 41.68 Red 5.3 (0.209)
8.5 (0.87), 48.53 Green 5.5 (0.217)
10.2 (1.04), 58.24 Silver 5.5 (0.217)
12.3 (1.26), 70.23 Pink 6.0 (0.236)
13.5 (1.38) 77.08 White 6.0 (0.236)
0
10°
20°
30°
Part no. Cam angle
8FA-17604-00
8BV-17604-71
8BV-17604-51
8BV-17604-31
8BV-17604-11
8BV-17604-91
GEAR SELECTION
Wire Free
No. of
gauge length
coils
mm (in) mm (in)
5.19 75 (2.95)
5.53 75 (2.95)
5.53 75 (2.95)
4.86 75 (2.95)
5.53 75 (2.95)
5.19 75 (2.95)
3
40°
50°
60°
Standard
51-43°
47°
45°
FX10Y/
FX10RTRY/
43°
FX10RTRSY/
FX10XTY
41°
39° FX10MTRY
11
INSP
ADJ
Outside
diameter Standard
mm (in)
69.5 (2.736)
69.5 (2.736)
69.5 (2.736)
69.5 (2.736)
FX10Y/FX10RTRY/
69.5 (2.736) FX10RTRSY/
FX10MTRY
69.5 (2.736) FX10XTY
6 9
70° 100°
80° 110°
90° 120°
Effects
Quicker upshifting
during acceleration
Quicker
backshifting
under load