Yamaha RS90NL, Suplementary Service Manual

Page: 54 / 308

18
INSP
ADJ
GEAR SELECTION
1 Chain and sprocket part number
2
Gear ratio
3
Secondary sheave spring
È
Parts name
É
Teeth & links
Ê
Parts no.
Ë
Standard
Ì
Drive sprocket
18 teeth 8FA-17682-80 RS90MS
19 teeth 8FA-17682-90
20 teeth 8FA-17682-00
21 teeth 8FA-17682-10 RS90N/RS90NR/RS90RS
22 teeth 8FA-17682-20 RS90GT
23 teeth 8FA-17682-30
24 teeth 8FA-17682-40
Í
Driven sprocket
37 teeth 8DW-47587-71
38 teeth 8DW-47587-81
38 teeth 8FB-47587-80 RS90GT
39 teeth 8DW-47587-91
39 teeth 8FB-47587-90
40 teeth 8DW-47587-01
RS90N/RS90NR/RS90RS/
RS90MS
40 teeth 8FB-47587-00
Î
Chain
68 links 94890-09068 RS90GT/RS90MS
70 links 94890-09070 RS90N/RS90NR/RS90RS
È
Drive gear
18 teeth 19 teeth 20 teeth 21 teeth 22 teeth 23 teeth 24 teeth
É
Driven gear
37 teeth — — —
1.76
68 links
1.68
68 links
1.61
68 links
1.54
70 links
38 teeth — —
1.90
68 links
1.81
68 links
1.73
68 links
1.65
70 links
1.58
70 links
39 teeth
2.17
68 links
2.05
68 links
1.95
68 links
1.86
68 links
1.77
70 links
1.70
70 links
1.63
70 links
40 teeth
2.22
68 links
2.11
68 links
2.00
68 links
1.91
70 links
1.82
70 links
1.74
70 links
1.67
70 links
È
Part No.
É
Spring rate
N · mm/rad
(kg · mm/rad)
Ê
Preload
N/mm (kg/mm)
(lb/in)
Ë
Color
Ì
Wire gauge
mm (in)
Í
No. of coils
Î
Free length
mm (in)
Ï
Outside
diameter
mm (in)
Ð
Standard
90508-500B1 6003 (613) 6.2 (0.63), 35.28 Brown 5.0 (0.196) 5.19 75 (2.95) 69.5 (2.736)
90508-536A9 7147 (729) 7.3 (0.74), 41.44 Red 5.3 (0.209) 5.53 75 (2.95) 69.5 (2.736)
90508-556A2 8314 (848) 8.5 (0.87), 48.72 Green 5.5 (0.217) 5.53 75 (2.95) 69.5 (2.736)
90508-556A7 9460 (965) 10.2 (1.04), 58.24 Silver 5.5 (0.217) 4.86 75 (2.95) 69.5 (2.736)
90508-60012 11876 (1211) 12.3 (1.26), 70.56 Pink 6.0 (0.236) 5.53 75 (2.95) 69.5 (2.736)
RS90N/RS90NR/
RS90RS/RS90GT/
RS90MS
90508-60007 12654 (1290) 13.5 (1.37) 76.72 White 6.0 (0.236) 5.19 75 (2.95) 69.5 (2.736)