Cub 1864 Ignition coils

[Rodster]

Great info! Could I get larger copies of the attachments? I'd like to read them. I remember getting the design magazines too and sometimes there were great articles.

[J-Mech]

I have to admit I did not know that there was anything solid state in the magneto. Even so.... If the internals fail, replacement is necessary.

Here is the PDF of the book that the pics were taken from:
https://www1.gardnerinc.com/dealers/...%20Systems.pdf

[Mike McKown]

I read that Magnum article yesterday and it sounded very similar to the B&S design. The OP has a Command, the article was about Magnum. I wonder if they are the same?

[Rodster]

That would explain why the bad coil has the same resistance reading as the good coil, the electronics are not being checked, only the windings.

Doubt if a bad coil can be bench tested at all.

[J-Mech]

Originally Posted by Rodster

That would explain why the bad coil has the same resistance reading as the good coil, the electronics are not being checked, only the windings.

Doubt if a bad coil can be bench tested at all.

Well Rod, if you read the entire article that was mentioned, on page 16 you will see a trouble-shooting page that tells how to OHM test the coil. It gives acceptable readings along with a description of the failure.... So YES, they CAN be bench tested.

[Rodster]

Originally Posted by J-Mech

Well Rod, if you read the entire article that was mentioned, on page 16 you will see a trouble-shooting page that tells how to OHM test the coil. It gives acceptable readings along with a description of the failure.... So YES, they CAN be bench tested.

Yes the windings can be tested, but NO the electronics can NOT be tested.

[J-Mech]

Originally Posted by Rodster

Yes the windings can be tested, but NO the electronics can NOT be tested.

If it mattered, Kohler would have given a test. I'm gonna say it will still fire without the electronics. Just not as hot.

Besides, if there was a possibility that if the internal components failed and the given test was not sufficient..... then Kohler would have stated: "Test A, test B the test X,Y and Z.... if it still doesn't fire, replace the coil as there is no way to test the internal components."

[Rodster]

Yes, that could be but probably not hot enough to fire the cylinder.

Since the electronics are potted to the coil unit with no access points it would be very difficult create a test without some elaborate bench set up.

The documentation touts the reliability of the Solid State Ignition Module (200,000 hrs and only 2 failures) so maybe Kohler decided no testing was required since the electronics will 'never' fail.

Bottom line in my case is, if the tractor is missing on one cylinder, check for spark, if no spark, check for obvious wiring issues and if none, pull coils and replace. Optional - check windings. Even if windings are good.... replace coils.

[J-Mech]

Originally Posted by Rodster

Yes, that could be but probably not hot enough to fire the cylinder.

I disagree. But I'm not willing to spend the time to write up an explanation.

Originally Posted by Rodster

Since the electronics are potted to the coil unit with no access points it would be very difficult create a test without some elaborate bench set up.

I think they already did make a test. It is in the book after all.

Originally Posted by Rodster

The documentation touts the reliability of the Solid State Ignition Module (200,000 hrs and only 2 failures) so maybe Kohler decided no testing was required since the electronics will 'never' fail.

Not likely.

Originally Posted by Rodster

Bottom line in my case is, if the tractor is missing on one cylinder, check for spark, if no spark, check for obvious wiring issues and if none, pull coils and replace. Optional - check windings. Even if windings are good.... replace coils.

Yes.... testing is always optional.


I'm done. No use trying to debate this. You obviously know way more than Kohler, or anyone on here.