New guy / First post

[Bill Cashin]

Rebuilding a Cub Cadet 125. Basically replaced the electrical system and got it running last night but the battery is not charging. Where should I start?

 

[digger]

Rebuilding a Cub Cadet 125. Basically replaced the electrical system and got it running last night but the battery is not charging. Where should I start?

Check the voltage coming out of the starter/generator at full throttle. If it's less than 14 volts, there's the problem. If its at that or above, then move on to the voltage regulator.

 

[Bill Cashin]

Thanks

 

[mfrade]

And welcome aboard too~...

 

[Bill Cashin]

With the engine running about half speed I’m only getting under 1 volt from the F terminal with my meter. Red probe on F terminal and black probe to ground. Voltage regulator is brand new.

 

[wh cc guy]

Welcome. Glad you joined in with us. Sounds like digger is helping you out with your problem.

 

[kmcconaughey]

WELCOME!

There are different variants of the voltage regulator. Be certain which one you have.

 

[rfunk]

In the faq there's a whole testing breakdown on the starter-generator. Check the details, my memory isn't perfect, but briefly shorting the F terminal on the starter-generator to ground, at full throttle, should produce more than about 16-18 volts at the A terminal. If yes, wiring issue (old wires) if no, internal issue.