Hey all have a Jd 850c that's had both speed sensors changed. As soon as the parking brake is off it starts spinning/walking in place and couldn't walk a straight line. I've been told that I need to calibrate it but don't have the procedure. If someone post or send me some information on that I'd appreciate it. Sn is 9399739
Sounds like the hydrostatic pump(s) neutral adjustment is required more than a calibration.
Thanks I'll try looking that up as well, you wouldn't happen to have the procedure would you for neutral adjustment
Sorry, No I don’t have the procedure.
Need a machine serial number. Also, when you key on, what numbers flash across the display?