Home › Forum › Ask A Member › 1974 Evinrude Yachtwin 4hp – failing to start › Re: 1974 Evinrude Yachtwin 4hp – failing to start
Well, if what you say is true, with good spark and wettish plugs, then I would make sure the plug wires are on the right plugs. That’s an easy mistake to make and easier to fix. There SHOULD be a small identification band on the wire for the top plug. Also, do NOT try to start it where it says, "start." Start it on "FAST."
If that’s not it, then you’re back to compression and making doubly sure it has GOOD spark. The spark should be able to jump 3/16" at least.
Was the engine running recently? It would be a rare event if you pulled an engine out that has sat for ten years or more and it started just like that.
Long live American manufacturing!