76 Johnson 35hp Not Fireing

[400hphemi]

I Have The Above Motor And I Have Been Doing Test To Find The Prob The Top Plug Fire A Nice Strong Blue Strike An I Can Hear It Zap The Bottem Sometimes It Puts Out A Blue Or A Weak Spark But Miss Fire More Then It Fires..i Know The Coil Is Good I Did A Test With It (i Pluged The Top Coil Wire The The Bottem An It Fires A Nice Blue Strike An The Zap)so It Is From That Wire To What An What Should I Buy For It...i Dont See A Power Pack...i Have Fixed All Fuel Probs Just A Spark Prob Now...thanks...help Me Please I Have Put Alot Of Money In This Thing...

 

[Joe Reeves]

Re: 76 Johnson 35hp Not Fireing

If you're absolutely sure the coil is good, perhaps the points are dirty, burnt, set wrong, something of that nature. Possibly a condenser is failing.

(Point Setting Of Magneto Models)
(J. Reeves)

Set the points as follows. Have the flywheel key aligned with the fiber rubber portion of the ignition points. Adjust the gap so that a .020 gauge will pass thru but a .022 will not. Should there be any question of the points being dirty (touching the contact with your finger would cause them to be dirty), clean them with a small brush and acetone or lacquer thinner.

NOTE: Should the operating cam have a small portion on it with the word "SET" imprinted, align this portion with the fiber rubbing portion instead of the flywheel key.

Spark plugs should be Champion UL81J plugs, gapped at .030

 

[400hphemi]

Re: 76 Johnson 35hp Not Fireing

aright i got fire to both plugs now thanks guy you helped alot i went over there to my shop pulled the fly wheel got my filler gage an a 22 whould move around in there i got it now where a 20 just slides in there an why i was there i got real fine sand paper an sanded it then blew it out with air on both sides put the fly back on pulled it cause my starter is broke an there came the blue strikes all over the place thanks a whole lot

 

[Joe Reeves]

Re: 76 Johnson 35hp Not Fireing

Be sure to torque that flywheel nut to factory specifications, whatever that might be (don't have the book in front of me). Neglecting to do so will result in a sheared flywheel key and damaged crankshaft and flywheel tapers.