A forage harvester represents agricultural implements that include at least
one rotating component which is driven through a drive train including a
main clutch operable between engaged and disengaged conditions so as to
selectively couple and disconnect an output of the implement power source
with the rotatable component. A rotation alarm circuit is provided for
causing a warning device or devices to be energized in the event that the
operator leaves a seat, in which he sits for normal operation, for a
predetermined minimum time period while the rotatable component is still
rotating, as determined by a rotation sensor. The warning device will
remain energized until the rotatable component spins down to a zero speed.
