2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 371Get this manual

2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 371

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MAINTENANCE SPECIFICATIONS Model Secondary sheave spring: Part number Color code Outside diameter Wire diameter Hole position Sheave side-spring seat side (twist angle)
12.3 Nmm (1.25 kgmm, 70.2