Determining the exact horsepower needed before shopping for a second hand tractor prevents overspending or underpowering your farm. Match the tractor’s PTO and engine horsepower ratings directly to your heaviest implements. Buying more horsepower than necessary wastes fuel, while underpowering leads to severe engine strain. https://www.blogbangboom.com/articles/bringing-an-old-tractor-back-to-life-on-the-farm