What safety features prevent unintended starting of the T100 Series?

The T100 Series is equipped with a safety interlock system that prevents the engine from cranking or starting unless the parking brake is engaged and the PTO lever is in the disengaged (OFF) position. The engine will automatically shut OFF if the operator leaves the seat before engaging the parking brake, or if the operator leaves the seat with the PTO lever in the engaged (ON) position. (Page 17)