Our 4420 sprayer had a ez guide plus running the autopilot. We upgraded the plus to a Fm-750. Sent the nav to ag express and had them upgrade the firmware to work with the 750. I also uploaded 7.79 firmware into the 750. Question is how do I calibrate the nav? I've never done much with autopilot. Do I need someone to come out and calibrate it with a laptop?
FM-750 autopilot calibration
