The 27-hp Vermeer SC252 stump cutter includes an operator presence system to further protect the operator. Control handles for travel, swing and raise/lower functions are equipped with sensors that recognize the presence of the operator’s hands — if the operator’s hands leave the controls for more than half a second, the clutch will automatically disengage. The cutter wheel brake will engage and then “cutting wheel engaged” indicator light will begin flashing. If contact with the handles is resumed within 2 seconds while the cutting wheel indicator light is still flashing, the cutter wheel brake will release and operation may resume. If more than 2 seconds elapse without contact with the controls, the cutter wheel drive switch must be turned off and then returned to the on position to resume operation.