I have a horse model about 35 years old with a kohler motor 7 horse. What new motor fits. serial no. 360331

In my opinion, (which doesn't count for much, I know) the 7hp Kohler Troy Bilt Horse tiller was the best tiller ever made. Those tillers lasted forever if they were taken care of. I've got one of the 8hp Kohler versions, but it's just not the same.

It's become a lot harder to find an engine to replace these engines. You'll most certainly want to go to a Briggs and Stratton dealer and have them look it up. You need a 3/4" crank, 2 7/8" long with a keyway, tapped for a bolt to hold on the pulley and reverse disc. IF you find an engine to fit, you'll likely need to have a custom throttle cable made up to replace the current one. A good small engine dealer should be able to help you.

Now for the bad news. The 7hp Kohler was a cast iron engine. Any replacement engine you find will likely be an aluminum block with a cast iron sleeve and therefore, much lighter. What this means is the balance of the tiller, from front to back, is going to be thrown off. The result is - it will be MUCH harder to pick up the rear of the tiller when you want to turn at the end of the garden. You will most likely need to either put on one of the bumpers (if you can find one to fit) or figure out a way to hang some weight on the engine. I've seen people do some creative things to get the balance back. Whatever you do, it just won't be the same as that great 7hp Kohler. I'd suggest trying to rebuild it - if possible!