1998 Johnson Evinrude "EC" 150, 175 FFI Service Repair Manual, P/N 520211, Page 173Get this manual
Quality of the image is intentionally reduced!
If Boat Plate shows
Use Bolts, Nuts, and Washers sent with MotorThey're usually Special won't Rust or Weaken
If owner tells you "I hit something rea lIy hard High speed blow