Shawn, I just purchased a JD317 after a waiting quite a while for the right deal to come along. The 17hp Kohler initially was oiled by a slinger that sprayed oil at the rods. This was inadequate at best, and worse if the tractor was operated on a side hill and the slinger couldn't reach the oil. This was a proble for any tractor that used the Series I Kohler, as Mark has pointed out, his Cub Cadet suffers the same malady. Kohler corrected the problem with the Series II by adding a pressurized, filtered system that supplies oil to the rods via galleys, and the new engine was offerred as a repleacement option for 317 owners that had the Series I, but too late for John Deere, the 317 already had a bad reputation. JD come out with the 318 that had an 18hp Onan engine and the 317 was retired from the line. The 318 and the 317 are nearly identical tractors, the major differences being the 318 has power steering, the 317 does not. THe 317 has dual front hydraulics and a rear PTO, whereas the 318 has a rear hydraulic. For this reason, the 317 has a belt driven rear tiller, the 318 tiller is hydraulic drive. Each tiller drive method has its advantages, but the belt driven tiller will cost you 2/3 the asking price for a hydraulic tiller. The 318's power steering is really only a requirement if you want to mount a front end loader (a tractor with a loaded bucket is no fun to steer without it!). The 318 is touted as one of the best L&G tractors that JD ever developed and the 317 has a bad rep, yet they are basically the same tractor. Go figure! My 317 has the Series II engine and I am as happy to own it as I would a 318. Generally a 317, due to its rep, will sell for half the price of a 318, especially if it is still powered by the Series I Kohler. However, for those that know what they are looking at, a refurbished 317 with a Series II will sell for around $2800, while a refurbished 318 sells for $3400, the $600 difference being paid for the power steering, and I suppose some added value for the Onan engine. Depending on what engine you have, and how much you had to pay for it plus what it costs to bring it up to snuff, I believe you will be satisfied with your purchase. Don't look back, you have a good tractor! Gadget
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