2008 Yamaha Snowmobiles FX NYTRO Factory Service Manual, Page 258Get this manual
CRANKSHAFT AND BALANCER SHAFT Tighten the bolts in the order of the embossed numbers on the crankcaseRefer to "INSTALLATION"
are used to determine the replacement crankshaft journal bearing sizes "J1J4" refer to the bearings shown in the crankshaft
web and lower crankcase illustration If "J1J4" are the same, use the same size for all of the bearingsSelection of bearings:
For example, if the crankcase "J1" and crankshaft web "J1" numbers are "6" and "1" respectively, then the bearing size for
"J1" is: Bearing size for J1: J1 (crankcase) J1 (crankshaft web)=61+2=7 CRANKSHAFT JOURNAL BEARING COLOR CODE black brown