2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 261Get this manual
REAR AXLEFINAL DRIVE GEAR AND DRIVE SHAFT
3.Apply: Sealant (Quick Gasket(to the mating surfaces of the swingarm and the final drive gear case) Sealant (Quick gasket): PNACC-11001-05-01 Yamaha bond No.1215: PN90890-85505 4.Install: Final drive gear 57 Nm (5.7 kg, 41 ft lb) Nuts 63 Nm (6.3 kg, 45 ft lb) Bolts