2003 Yamaha YFM400FAR Kodiak Factory Service Manual, Page 424Get this manual
BALANCER GEARS AND OIL PUMP
REMOVING THE BALANCER DRIVE GEAR AND BALANCER DRIVEN GEAR 1.Straighten the lock washer tabs2.Loosen: Balancer driven gear nut NOTE: Place an aluminum plate between the teeth of the balancer drive gear and balancer driven gear 4