Posted 10/5/2008 23:08 (#475683 - in reply to #475665) Subject: Re: incorrect speed readout on JD 9760
NE SD
Those are great to know but none of them are correct. Both of our combines were off considerably from the factory. As the other poster mentioned, you have to bump them up or down until the speed is right. I used RTK GPS as my match. SF2 should work equally well.