Mine is 50:1 Model FD-22M Hope that helps. Loren
50:1
1968 20hp
Johnson 6hp spark plug gap
50:1
If it's in really good condition, about $250.
I reckon about £400-£500 if in decent condition
The Johnson model CD25R, is a 6hp outboard, produced in 1968.
A 1968 model, 5.5 hp Johnson requires a 50:1 ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
Model number JHF 23 A would be a 1968, 3hp Johnson outboard.
David Underhay The decal on my 1968 3hp Johnson says use either of: Champion J4J, AC M42K, Autolite A21X sparkplugs. You may have to find the current equivalents
50:1
1968.