2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 373Get this manual
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MAINTENANCE SPECIFICATIONS Model Shock absorber: Damping force Front Extension
1,373 N0.3 ms (140.0 kg0.3 ms, 308.6 lb0.3 ms) (FX10 "USACanada") 1,359 N0.3 ms (138.6 kg0.3 ms, 305.5 lb0.3