12. OPERATION 12.1.4 OPERATIONS AND CHECKS BEFORE STARTING ENGINE ¤ WARNING If the control lever is touched by accident, the work equipment or the machine may move suddenly. When leaving the opera- tor's compartment, always set the safety lock lever securely to the LOCK position. 1. Check that safety lock lever 1 is at the LOCK position. Lock 2. Check the position of each lever. Set the control lever to the neutral position. When starting the engine, never touch the knob button. Free 3. Insert the key in starting switch 2 , turn the key to the ON position, then carry out the following checks. AM088930 (1) The buzzer will sound for approx.
1 sec, and the following monitors and gauges will light up for approx. 3 sec. Radiator water level monitor 3 Engine oil level monitor 4 Hydraulic oil level monitor 5 Charge level monitor 6 Fuel level monitor 7 Engine water temperature monitor 8 Engine oil pressure monitor 9 Engine water temperature gauge 0 Fuel gauge A Engine pre-heating lamp B Air cleaner clogging C Swing lock lamp D Replacement monitor of engine oil E HEAT OFF ON START AM090710 If the monitors or gauges do not light up or the buzzer does not sound, there is probably a broken bulb or disconnection in the monitor wiring, so contact your Komatsu distributor for repairs. 2-50