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    1974 40 HP johnson, Trying to install electric start.

    Hi! Hopefully some one can offer me a little insight here on my situation... I have a 1974 Johnson 40HP Long shaft, It is a manual start, No charging system.... Its on my pontoon, and it suits my needs well, and bought it for a good deal when my 55hp ended its life early last season.. Now...
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    Oil Mix ratios, Oil type, Fuel Grade?

    Hi guys, Im sure this is posted somewhere here, I looked a few pages couldent locate, searched, No results?? So If there is a thread Someone could link it? AWESOME.. Ha Ha But heres the question, I have a 1962 28 HP Johnson, and 74 40 HP johnson, I ran the 74 at 50:1 last year all...
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    1975 Johnson 40hp, flywheel key shearing

    My manual start 40 hp, keeps shearing the flywheel key, it started after I had it off, the original key was partially sheared, but my replacement completely sheared after an hour of runtime or so... im assuming im under tightening it?? They keyway is just from hardware store.. not original...
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    1975 Johnson 40hp... lost spark .

    Alright, so my 75, 40 hp twin lost spark, I ran it about 5 days ago... just went to take it to the store, and nothing. Ran great last week as it always dose... but im wondering if points are dirty, or bad exciter coil maby? Its been raining for a week, so im thinking damp points, but while im in...
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    76, Johnson Seahorse 55 to a Evinrude 55?? Pwer head question....

    Hi guys, So quick question, I curently am running a 76 johnson seahorse 55, twin, non com. It has low compression in the lower cyl. I dont want to ruin this motor, as i have looked into bore, and see no visible damage, (boroscope) so.. i have available to buy, a 75 or 76 evinrude 55 hp...
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    1976 Johnson seahorse 55, idle issues, vac hose ?

    Alright, so the motor is a 76 seahorse 55 hp twin... doesn't like to idle, it will idle, just kinda rough, stalls when put into gear out of gear, it is also very hard starting hot, ive played with mixture screws and its better just not perfect. I'm assuming carbs need to be cleaned? Looking...
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