1983 70hp johnson spark plug?

[TamsBoat]

Hello All,
I have a 1983 johnson 70hp outboard. I need to know what spark plug goes with this engine and if it requires a gap and the size of the gap? Please help Me?!!!

 

[Dhadley]

Re: 1983 70hp johnson spark plug?

If I were changing the plugs I'd use the QL77JC4s gapped at .035 with todays 87 octane fuel.