2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 450Get this manual
MIDDLE GEAR
Where:numeral (usually decimal number) on the bearing housing is either added to or subtracted from "76"fnumeral (usually decimal number) on the middle driven pinion gear is either added to or subtracted from "59"gnumeral (usually decimal number) on the middle driven pinion gear is either added to or subtracted from "79.5"hnumeral (usually decimal number) on the left crankcase specifies thickness of "72.01"inumeral (usually decimal number) on the right crankcase specifies thickness of "23.87"Example: 1) If the bearing housing is marked "+02", is 76.022) If the driven pinion gear is marked "+02", is 59.023) If the driven pinion gear is marked "+02", is 79.524) If the crankcase (left) is marked "72.01", is 72.015) If the crankcase (left) is marked "23.87", is 23.876) Therefore, the shim thickness is 0.64 mmB76.02 59.0279.52 72.01 23.87 0.050.64