[AT] MF 471 throttle vs. accelerator

[Greg Hass]

My guess is that the foot accelerator higher speed is for road use only 
and not for day to day field work.  The older John Deeres
  such as the 3020 that I have and ones like the 4320's  had a knob on 
the end of the throttle that was spring loaded. You pull the knob out 
and pull the throttle past a stop and gain 2 or 3 hundred RPM. I done 
remember where I read it but somewhere it said the extra RPM was for 
road travel. In your case the owners manual should tell you what the 
different RPM's are for.
                     Greg Hass