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The secret to efficient rototilling is slow ground speed. VERY slow ground speed. Slow as in less than 1 MPH at full rated PTO RPM on the engine. Most older Fords run way to fast even in low gear to till properly. Used tillers are an iffy proposition for novices that don't know what to look out for. If you're gonna be at it for a while, do yourself a favor and spend the money on a new one. And if you're gonna get one, get the best: Howard. If you truly need to save some money, I've also heard good things about certain models of King Kutter and Landpride tillers. Get the heaviest duty one you can afford. If you're stuck with a used one, check the gear box carefully for chipped/broken/missing gear teeth, shot bearings and leaking oil seals. Check the chain drive (if it has one) for disintegrated chain rollers, chewed up sprockets, bad bearings and leaking seals. Check the spline on the end of the tiller shaft for wear and twisting. Check the tiller shaft for straightness. Look at the teeth, a full set will be expensive. Check the slip clutch. Don't even think about buying one without a slip clutch. If any of the above mentioned stuff needs work, parts are expensive. I chewed up a chain drive on mine. Two bearings, two sprockets, two oil seals, a hunk of chain and a gasket cost over $400, and I shopped HARD for the best prices. Figure about the same to rebuild a gearbox. A new tiller shaft came in a $600, I passed, I'll run the twisted one until it falls apart.
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