2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 207Get this manual
MIDDLE GEAR Tighten
the bearing retainer
CAUTION:
The middle driven shaft bearing retainer has left-handed threadsTo tighten the retainer turn it counterclockwiseBearing retainer: 110 Nm (11.0 kg, 80 ft lb)
3.Install: Shims Bearing housing NOTE: Install the shims so that the tabs are positioned as shown in the illustration