1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 643Get this manual
Quality of the image is intentionally reduced!
11 Place shim(s) (retained from disassembly) into gear housingIf shim(s) were lost, or are not reusable (damaged), start with approximately 0.010 (0.254mm)12 Install bearing race and bearing retainer