Back in the 50's and 60's turning the miles back on a car was a major concern as you where buying a used car. Now in 2009 I have a question. I bought a realy nice 1978 JD 850 that runs like a charm with 990 hours on it. While looking though the operators manual I found great maintance records until 1999 when the 850 had 911 hours on it. Rather then confront the seller at this point I am wondering how the tractor went 9 years with only 80 hours or was the hour meter turned back. I know the seller is very knowledgeable with tractors, seemed like a honest young man.