Johnson Evinrude 18hp Outboard FD-12 1958 Stop kill switch mount 377289 305608 Controls very nice condition

very nice condition

Yours should look like this one

but this type of head bolt was used on OMC Stringer

but OMC used bolts rather than studs at the end of the crankshaft to hold the couplers on)

11 1/2" center to center

Johnson Evinrude 18hp Outboard FD-12 1958 Stop kill switch mount 377289 305608 Controls very nice conditionItem Details This was off an 1958 Johnson 18hp (Model Number FD 12, Serial Number 1707675) The Part Number of Kill switch is 377289, 0377289 The Part Number of Cover is 305608, 0305608 The Part Number of Retainer Nut is 203658, 0203658 The Part Number of Rubber button 203660, 0203660 The rubber button is cracked and slight dry rot, but still functional. Good Condition. This was used on 1956, 1957, 1958,1959, 1960 Various 18hp Johnson and Evinrude