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Kohler K241 No Spark, Can't Think


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#16 wvbuzzmaster OFFLINE  

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Posted August 22, 2014 - 07:24 PM

The plug wire came off a running kohler, so I know it is good.
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#17 wvbuzzmaster OFFLINE  

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Posted August 22, 2014 - 07:24 PM

How do I test the coil?

#18 trowel OFFLINE  

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Posted August 22, 2014 - 07:50 PM

From K D Redd, should apply to yours too :

 

Your K-161 should have a flywheel magneto. The point could be under the flywheel or in a point box below and left of the carb.. If you know how to read an OHM Meter you can do a rough test of a mag coil. If you connect one lead of the ohm meter to the engines block and the other ohm meter lead to the spark plug wire, You should see a resistance reading in the 7000 to 10000 ( 7K to 10K) ohm range. This test the High Tension(Voltage) winding of the coil. The Low tension side should read near Zero ohms. This is tested by measuring from the block with one ohm meter lead and the other ohm meter lead to the wire that connects to the point. You can also check the point with an Ohm meter, when the lead to the coil is disconnected from the point. You should see the points make and break contact as the engine is turned over. If you bought your new points from Kohler, there is a note in the package with the points about cleaning the point with an electrical cleaner as a film can develop on the point while they are in the package that can prevent them from making contact. You can also use a piece of clean white paper to clean this film. Trap the paper between the point and slowly pull the paper from between the point making sure no little piece is torn from the paper and left in between the points. The points MUST make contact for the mag to work. There also MUST NOT be any connection to the engines block between the wire that connects the coil to the points. If you engine has the points in the box below and to the right of the carb, be sure the kill switch that is in the point box is not shorting the point out without the button pushed. The quickest way to check this is to leave the points box off the engine when checking for fire.


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#19 wvbuzzmaster OFFLINE  

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Posted August 22, 2014 - 07:53 PM

I tried the ohm test with three different meters on two coils I have and can't determine anything....

#20 trowel OFFLINE  

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Posted August 22, 2014 - 08:02 PM

Has to be something stupid,...if your points are firing but the coil is not then there is juice from the battery to the points through the coil but yet the plug does nothing but sit there looking stupid, plug wire fine, plug fine, ...

 

Im starting to think the wire is crossed someweres, below is picture of the wiring :

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  • kohler_coil.jpg

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#21 wvbuzzmaster OFFLINE  

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Posted August 22, 2014 - 08:35 PM

Checked that wiring a dozen times and it is correct.

Edited by wvbuzzmaster, August 22, 2014 - 08:35 PM.


#22 trowel OFFLINE  

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Posted August 22, 2014 - 08:38 PM

Has to be the coil then.



#23 wvbuzzmaster OFFLINE  

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Posted August 22, 2014 - 08:40 PM

I will swap the coil tomorrow afternoon and see what happens.
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#24 IamSherwood OFFLINE  

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Posted August 22, 2014 - 08:59 PM

I will swap the coil tomorrow afternoon and see what happens.

 

Why wait till tomorrow?



#25 wvbuzzmaster OFFLINE  

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Posted August 22, 2014 - 09:08 PM

I hate working in the dark, and have work in the morning. Besides that I have to decide which tractor is loaning its coil lol.
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#26 IamSherwood OFFLINE  

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Posted August 22, 2014 - 09:18 PM

I hate working in the dark, and have work in the morning. Besides that I have to decide which tractor is loaning its coil lol.

 

I'm curious as all heck, as to what's going on with this issue.

I'll be watching how the coil swap works out.

 

I'm sure you're on it, but is the possibly dead coil one that requires

an external resistor?



#27 wvbuzzmaster OFFLINE  

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Posted August 22, 2014 - 09:24 PM

.????? Elaborate

#28 trowel OFFLINE  

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Posted August 23, 2014 - 07:07 AM

I'm curious as all heck, as to what's going on with this issue.

I'll be watching how the coil swap works out.

 

I'm sure you're on it, but is the possibly dead coil one that requires

an external resistor?

Kohler uses internal balance resister unless this has been swapped out. If it had a broken internal or external balance resister it would not fire at the points at all.


Edited by trowel, August 23, 2014 - 07:12 AM.

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#29 trowel OFFLINE  

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Posted August 23, 2014 - 07:11 AM

.????? Elaborate

Balance resister reduces the current going to the points from the battery, this is a common mistake many make when using a car coil and end up having to file the points every few hours, usually after several months the points are fried and filed to nothing.



#30 wvbuzzmaster OFFLINE  

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Posted August 23, 2014 - 04:19 PM

Swapped coil, no difference. Swapped the points and I was able to get 1/4" spark from wire to plug. Then, I got it to start, run, and drive in all gears, and shut it down before bad stuff happens. Thanks guys.
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