Johnson Outboard Question

[StriperChaser]

My 1996 Johnson 112 SPL sat sheltered for (6)weeks and was running fine when last used. <br />First time out a few weeks ago, it was hard to start and would only run for more than a minute or two at a time. I checked the fuel filter, changed the plugs, and it started right up and ran about a minute, then stalled. When I checked for spark at the plugs I found none. Any ideas what could cause this ? What generates the spark on an outboard ? Any help would be appreciated.

 

[Dhadley]

Re: Johnson Outboard Question

Double check for spark on all 4 first. If you're sure all 4 have no spark, check your emergency shut off switch and then the key switch kill circuit. <br /><br />Spark is first generated by the flywheel magnets passing by the stator coil windings. <br /><br />Good luck!

 

[StriperChaser]

Re: Johnson Outboard Question

Thanks for the reply. I have rechecked all plugs and have a very faint spark on all four. I have had problems with emergency kill switch and had first thought that was the problem. Is there a way to by pass the emergency kill switch ? I am concerned it may not be making a good solid circuit causing the spark problem. The kill switch has always been a problem with it's design. The clip would never stay secure and has many times fell off while operating the boat. There have been a few times when I noticed the clip had fell off and the engine had continued to run. I just want to test the circuit if possible.

 

[Dhadley]

Re: Johnson Outboard Question

If you have spark then it's neither of the kill circuits. It should be of some concern that the motor continues to run with clip pulled. <br /><br />As for your origional problem of hard starting and stalling I would look at other things like carbs. Especially if it was OK then wasn't after it sat. Also make sure you aren't trying to use the fuel that's 6 weeks old. Remember --FRESH 87 octane only and Champion plugs.<br /><br />Good luck!