The number on the tiller case is TH-1003 B2 and the SS is 45-9074. 96 Get it as soon as Wed Apr 14. Troy Bilt Horse Tiller Kohler Engine Replacement 7hp Commercial 3 Year Warranty 299 95 Picclick I want to replace it with an 8hp engine. Troy bilt horse replacement engine . Ad Improve Your Business ROI - Get A Better Deal On Automotive Spare Parts. The Econo-Horse tiller was built like a tank and outlasted just about any engine you could bolt onto it but Troy-Bilt went bankrupt years ago and what was left of them was purchased by MTD. I just purchased a replacement engine old engine was the HH-60for my Troy Bilt Horse tiller. Ad Improve Your Business ROI - Get A Better Deal On Automotive Spare Parts. I will have to disassemble to be sure. The replacement is from Harbor Freight and is called a Predatorfrom this videoon u Tube. It hasnt run great. Troybilt Horse Engine Swap in reply to dhermesc 03-14-2012 113716. After a little research I went with the chinese Honda ...