2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 179Get this manual
Drive shaft and lower case (regular rotation model)
S69J6210
Roller bearing installerremover 3: YB-06432 Driver handle 4: YB-06071
Checking the lower case
1Check the skeg and torpedo for cracks or damageReplace if necessary
Checking the pinion and forward gear
1Check the teeth of the pinion, and the teeth and dogs of the forward gear for cracks or wearReplace if necessary
S69J6215
Assembling the lower case
1Install the original shim(s) and taper roller bearing outer race.S69J6200