Gear Selection - Yamaha 2010 FX Nytro FX10X Service Manual

GEAR SELECTION

The reduction ratio of the driven gear to the drive gear must be set according to where the snowmo-
bile will be operated and driving conditions. If the load on the snowmobile is big such as driving at
high altitude mountain or towing, the driven/drive gear ratio should be increased. If the load on the
snowmobile is small such as driving on the fairly smooth surfaces or hard-compacted snow,
decrease the ratio.
Chain and sprocket
The drive and driven gears and the chains shown in the gear ratio chart are available as options.
Parts name
Drive sprocket
Driven sprocket
Chain
Gear ratio
The figures containing a decimal point represent the driven/drive gear ratios, while the bottom num-
bers designate the number of links in the chain.
Drive gear
Driven gear
38 teeth
39 teeth
40 teeth
Teeth & links Part number
18 teeth 8FA-17682-80
19 teeth 8FA-17682-90
20 teeth 8FA-17682-00
21 teeth 8FA-17682-10
22 teeth 8FA-17682-20
23 teeth 8FA-17682-30
24 teeth 8FA-17682-40
38 teeth 8FB-47587-80
39 teeth 8FB-47587-90
40 teeth 8FB-47587-00
68 links 94890-09068
70 links 94890-09070
18 teeth 19 teeth 20 teeth 21 teeth 22 teeth 23 teeth 24 teeth
— —
2.17 2.05
68 links 68 links
2.22 2.11
68 links 68 links
22
GEAR SELECTION
FX10M53SZ/FX10M62SZ
FX10Z/FX10RTRZ/
FX10RTRSZ/ FX10XTZ
FX10Z/FX10RTRZ/FX10RTRSZ/
FX10M53Z/FX10M53SZ/
FX10M62SZ
FX10Z/FX10RTRZ/FX10RTRSZ/
FX10XTZ/FX10M53Z/
FX10M53SZ/FX10M62SZ
1.90 1.81 1.73
68 links 68 links 68 links
1.95 1.86 1.77
68 links 68 links 70 links
2.00 1.91 1.82
68 links 70 links 70 links
INSP
ADJ
Standard
FX10M53Z
FX10XTZ
1.65 1.58
70 links 70 links
1.70 1.63
70 links 70 links
1.74 1.67
70 links 70 links