Yamaha 115-225 HP Outboards Service Manual, Page 145Get this manual
ILOWRI "1
ASSEMBLY AND ADJUSTMENT (115-225)
1 61005-0
ASSEMBLY AND ADJUSTMENT (115-225)
ASSEMBLY Bearing housing 1) Place washer on the reverse gear and pressfit ball bearing to it
2) Install needle-bearing and oil seals in the bearing housing, and then press-fit the reverse gear complete into the housing