Yamaha RS90NL Suplementary Service Manual page 209

Model
Rivet:
Outer
Part number
Material
Size
Quantity
Hole quantity
Inner
Part number
Material
Size
Quantity
Hole quantity
None (outer and inner)
Secondary sheave spring:
Part number
Color code
Outside diameter
Wire diameter
Hole position
Sheave side-spring side (twist angle)
Spring rate
Number of coils
Free length
Torque cam angle
Drive chain:
Type
Number of links
Secondary reduction ratio
Maximum 14 link drive chain section length
<Limit>
MAINTENANCE SPECIFICATIONS
RS90N/RS90NR/RS90RS/RS90GT/RS90MS
90261-06034 (RS90N/RS90NR/RS90RS/RS90GT)
90261-06028 (RS90MS)
Steel (RS90N/RS90NR/RS90RS/RS90GT)
Aluminum (RS90MS)
13.9 mm (0.547 in) (RS90N/RS90NR/RS90RS/RS90GT)
10.3 mm (0.406 in) (RS90MS)
3
3
None (RS90MS)
90261-06034
Steel
13.9 mm (0.547 in)
3
3
Nothing
90508-60012
Pink
69.5 mm (2.74 in)
6.0 mm (0.24 in)
3-3 (60°) (RS90N/RS90NR/RS90RS/RS90GT)
1-6 (70°) (RS90MS)
12.3 N/mm (1.25 kg/mm, 70.23 lb/in)
11,876 N · mm/rad (1,211 kgf · mm/rad, 67,811 lb · in/rad)
5.53
75.0 mm (2.95 in)
43° (RS90N/RS90NR/RS90RS/RS90GT)
39° (RS90MS)
Borg Warner Automotive 23RH303-68ASM
70L (RSG90N/RS90NR/RS90RS)
68L (RS90GT/RS90MS)
1.90 (40/21) (RS90N/RS90NR/RS90RS)
1.73 (38/22) (RS90GT)
2.22 (40/18) (RS90MS)
133.35 mm (5.25 in)
137.35 mm (5.41 in)
100
SPEC