2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 248Get this manual
Drive shaft and lower case (T50FT50B, FT50C) No1 10 11 12 13 14 15 16 17 18 19 20 21 22 Part name Drive shaft Taper roller bearing Bearing outer race Pinion shim Sleeve Hose Plastic tie Joint Nut Water inlet cover Screw Seal Plate Forward gear shim Bearing outer race Taper roller bearing Needle bearing Forward gear Needle bearing Pinion Nut Lower case 22 mm 95 9.5 69 As required