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Garden Tractors Discussion Forum

Re: 1970 14 hp kohler no spark

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Author  [Modern View]

11-28-2013 16:03:10

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Actually, I believe the capacitor in those Kohler EI coils gets charged voltage from the stator that gets rectified by diode(s) in the trigger module, and when the SCR is triggered it discharges the capacitor through the coil and makes the spark, a primitive CD ignition system.

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joe csuti

11-28-2013 19:18:21

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 Re: 1970 14 hp kohler no spark in reply to Bob, 11-28-2013 16:03:10  
You may be right,I've never put a trigger module on bench & tried to do open heart surgery on it & figure out how it works,what does strike me as strange is condenser is non polarized,I would think same would have to be polarized to operate correctly in a cd system,but I may be/am probably wrong,it just may be another one of those mysteries of life/electronics.

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11-28-2013 22:01:13

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 Re: 1970 14 hp kohler no spark in reply to joe csuti, 11-28-2013 19:18:21  
HOW do we know the capacitor that's epoxied inside the coil is NP?

I've got a bad coil lying on the back of the bench somewhere... I'll try to find it and dissect it some cold and stormy day this winter when it's too cold to do much else!

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joe csuti

11-30-2013 03:01:05

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 Re: 1970 14 hp kohler no spark in reply to Bob, 11-28-2013 22:01:13  
I'm just going by symbol used in trigger module/coil drawing,the way condenser symbol drawn would indicate a non polarized condenser as there is no pos(+)end,the symbol is the same as a symbol for a condenser used in AC circuts for motor start condensers,line filters etc which are non polarized.

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