Hi all. I'm new to this site and I think I have a problem. Well I recently had to swap in a 93' motor from my donor tractor into my 85'.
It runs and mows but I noticed it was cranking very slow today. I had to jump it 3x today after each time I shut it off...weird!
I put the volt meter on it and the battery says 12.5v and you would think it would fire but wont. Now when it is running it went to 13.7v meaning it was charging. Started to rain put it inside. DEAD. Now at 12.2v. Swapped a battery into it (12.5v) and fired right up. I put a meter on it and dipped to 9-10v when starting. Running this battery now says over 14. It actually hit 15. It hit 15 due to me having the charging wire plugged in (red wire you see that's not plugged in). With it unplugged it stayed to around high 14s. Now with the motor being from a 93' the 85' motor was a tad more basic for the charging system. I'm un certain how the battery voltage is even changing with this wire not plugged in. With it plugged in is it regulating or is the year change screwing with the solenoid perhaps??