We put a total of 10 gallons of diesel in over that 8 hours so I know it was not gas by mistake.
We noticed the light after we got about 60 foot into a shallow trench and we could find nothing specific in the manual. The first thing it suggested was check the fuel filter but it didnt make sense to me with the RPM cap that was there. Granted we went from a early 70's Ferguson to this so there is going to be a learning curve from what we were use to and then what to expect with routine things with a brand new diesel.
Also, the gauge has a marking on it for the PTO and I assume that is a max operating range. We never got close to that. After the light started flashing we just noticed that what happened when the throttle was pushed nearer the top position was not close to what we got once the light came on.
I have a feeling that since it has less than 10 hours on it we will more than likely call the dealer. Is it worth taking the fuel filter out and clean it? The odd thing is if it was the clogged fuel filter you would notice it running rough... It runs completely smooth..