mine is set at .040
The correct spark plug gap for the 1979 model, 100 hp Johnson outboard is .030 in.
The recommended plug gap for the 1972 model, 20 hp Johnson outboard is .030 in.
j4j
Ngk
The 1979 model Johnson 9.9hp uses a Champion L77-JC4 spark plug.
The 1955 model, 3 hp Johnson outboard, requires a spark plug gap of .030 in.
The correct plug gap for the 1971 model, 6hp Johnson outboard, is .030-.035 in. It requires a Champion J6J, or NGK B6S.
The required spark plug air gap for the 83 model, 15 hp Johnson is .030 in.
The spark plugs on a 1988 model, 70hp Johnson outboard, should be gapped to .030in.
Impossible to answer, depends on what model KTM you have.
The correct spark plug for this model is the NGK B-7ES.
The 140 hp model Johnson outboard runs a plug gap of .030 in.