1997 Johnson Evinrude "EU" 9.9 thru 30 2-Cylinder Service Repair Manual, P/N 507263, Page 341Get this manual
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If Boat Plate shows u.sCOAST GUARO
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 spee