1997 Johnson Evinrude "EU" 9.9 thru 30 2-Cylinder Service Manual, P/N 507263, Page 341Get this manual
If Boat Plate shows u.sCOAST GUARO
ON CAPAC ITY INFORM AT MAX HP MAX PERSON MAX WEIGHT
use Only Or Smaller I
When Rigging or Fixing any boat if transom looks Weak, tell the owner If transom is Curved, motor may come Loose Mount on Flat Surface only Use Shims to make surface flat
Use Bolts, Nuts, and Washers sent with Motor_They're usually Special won't Rust or Weaken
I owner tells you "1 hit something really hard High speed blow to lower unit or, "1 was backing up think motor may have hit the tree or something"