Hello, first time posting here. I tried looking around older posts but have yet to find the fix. I have an HH120 with the belt driven starter/generator thats on a Sears Super 12 tractor. The starter barely turns over the engine even with a jumper attached to it. It seems it has got even worse now, the starter no longer can even turn over the engine at all. I removed the belt to see if the starter could spin with no load on it, and it just barely did. It was weak enough where i could stop it easily with my hand. I've tried cleaning all the electrical connections and grounds with no luck. To see if it was the starter, i took an identical one off of another working tractor and put it in this one, but it still just barely turned so i know its not the starter itself thats the issue. The battery and battery cables are brand new on this tractor. I was thinking of swapping out the voltage regulator but im not sure if that even has anything to do with the starting of the engine. Im pretty stumped at this point, hoping someone here can give me some advise on what to try next. Thanks!