JD 9400

sleepy1 · Nov 3, 2015

Man I work with 7720 bit the dust over the weekend he just has a few acre left to do.Here is the question there is a nice 9400 coming up in a estate sale in a few weeks.the sale ad says that is a 90. 2 questions was there a issue with the harmonic balancer and crankshaft I had heard the first one there was.The second is this combine sat it a shed for 5 years might have been started for the first 2 how many problems would he expect to have from it.

MN Scott · Nov 3, 2015

The 1990 model would have the smaller 359 engine in it. It was under powered and it had the issue with the crankshaft breaking. There was a updated crankshaft for them that fixes the problem. If the machine your looking at has not been updated its just a matter of time before the crank breaks. 1991 and up have the 414 engine that has no crankshaft issues and has more power. As for sitting for 5 years that shouldn't be a problem unless rodents have gotten into the wiring. Might need a new set of batteries and would be a good idea to change oils and filters. Otherwise grease it up and put it to work. I have a 1992 9400 and really like it. A huge step up from the 6620 I had before.

JD 9400

sleepy1

Member

MN Scott

Well-known Member

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