2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 201Get this manual
MIDDLE GEAR 2.Remove: Nut Washer Universal joint yoke
NOTE: Use the universal joint holder to hold the universal joint yokeUniversal joint holder: PNYM-04062, 90890-04062 3.Remove: Bearing housing assembly 1
Bearing housing removal steps: Clean the outside of the middle driven shaftPlace the middle driven shaft onto hydraulic press
CAUTION:
Never directly press the shaft end with hydraulic press, this will result in damage to the shaft threadInstall the suitable socket on the shaft end to protect the thread from damagethe shaft end and remove the bearing housing