2006 SD Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 249Get this manual
If weakened, parts could fail later on the water, when not expected
U.SCOAST GUARD
CAPACITY INFORMATION MAX HP MAX PERSONS MAX EIGHT
If boat plate shows Use only or smaller
When rigging or fixing any boat, if transom looks weak, tell the ownerIf transom is curvedoutboard may come looseMount on flat surface onlyUse shims to make surface flat
Use bolts, nuts, and washers supplied with outboardThey are usually specialand will not rust or weaken