. SAFETY GENERAL PRECAUTIONS COMMON TO OPERATION AND MAINTENANCE 2 - 17 PRECAUTIONS WHEN STANDING UP FROM OPERATOR'S SEA Before s tanding up from the operator's seat, such when adjusting the position of th e seat, always lower t he work equipment completely to the ground, set work equipment lock lever (1) to the lock position (L), set parking brake switch (2) he ON (A), and stop the engine. If th e control levers are t ouched by suddenly move a nd cause serious personal injury or death.