. SAFETY PRECAUTIONS FOR MAINTENANCE 2 - 30 STOP ENGINE BEFORE CARRYING OUT INSPECTION AND MAINTENANCE Always sto p the machin e before performing any inspection and maintenance. dum completely, set dump HOLD position, l ock with dump l ever lock knob (2), then sto p the engine Se t parking brake switc h (3) to the PARKING position to a pply the parking brake, then p ut block s in front of and behind the tires to prevent t he machine f rom moving