Farmall Cub questions

jakieboy · Nov 16, 2017

How do I test the condenser and the coil? Tractor has a J4 magneto.

Looking4new · Nov 17, 2017

Try this site.
Testing an Ignition Coil with a DVOM - Farmall Cub

jakieboy · Nov 17, 2017

Looking4new said:
Try this site.
Testing an Ignition Coil with a DVOM - Farmall Cub

I appreciate the answer you gave, however my cub has a j4 magneto with an internal coil that doesn't have the two wire set up you have shown. how do I test my coil?
additionally how do I test for a bad condenser?

Looking4new · Nov 17, 2017

Google is or can be your best friend. I found my original link via google. Just google IHC J4 magneto test and go from there.

Ledgemere Farm · Nov 22, 2017

Have a friend hold the coil wire while you crank it &#55357;&#56834;&#55357;&#56834;

Code54 · Nov 22, 2017

May want to see:
Farmall H4 magneto diagnosis - YouTube

Soundguy · Dec 5, 2017

condensers are capacitors. test them with an ohm meter.

short the pigtail to the body to discharge it.

set a meter to Rx1

put leads on the pigtail and body. On an analog meter, the needle will swing from 0 ohms to infinite. On a digital it will go from a low reading, probably auto range a bit, then indicate infinite.

Condensers that read infinite all the time are open, ones that read 0/low and never increase are shorted.