I recently have moved from a 6600 to a 9400. Hard to tell you are doing anything. Any tips, how to know if you are going to fast, settings for soybeans, 40bu/acre, what to watch for repair wise, thanks.
Do you have an operator's manual? If so, read it and start there with your settings.
Learn how to use the Harvestrak monitor. If you are running greenstems, don't push it, if nice and dry, you should be able to move right along if you are running a 20-22 foot header, 4 mph plus or minus.