2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 212Get this manual

2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 212

LOWR Shimming

Lower unit
3Install the pinion and pinion nut, and then tighten the nut to the specified torquePinion shimming gauge III 4: YB-06441 Pinion nut: 142 Nm (14.2 kgfm, 103 ftlb)

NOTE: Shimming is not required when assembling the original lower case and inner parts Shimming is required when assembling the original inner parts and new lower case Shimming is required when replacing the inner part(s)
Selecting the pinion shims