1998 Johnson Evinrude EC 50 thru 70 HP 3-Cylinder Service Manual, Page 292Get this manual
50 If Boat Plate shows u.sCOAST GUARD
CAPACITY INFORMATI.ON MAXHP MAX PERSONS MAX WEIGHT
use Only Or Smaller!
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
,:;Jfi-:? Use Shims to make surface flat:
Use Bolts, Nuts, and Washers sent with Motor_ They're usually Special won't Rust or Weaken