2009 Yamaha F40 Outboard Service Manual, Page 257Get this manual
Lower unit
Removing the oil seal housing, drive shaft, and shift rod
1Remove the cover a, the oil seal housing assembly b, and the washer c2Remove the shift rod assembly d
Disassembling the drive shaft assembly
1Remove the taper roller bearing aNOTICE: Do not press the drive shaft threads directly
3Remove the pinion nut, and then remove the drive shaft and the pinion