. OPERATION OPERATION gauges, 3 seconds up, there is disconnection. Contact your Komatsu distributor for inspection. 3 - 93 CHECK BEFORE STARTING Always perf orm the p rocedures i n this section before starting the engine e ach CHECK MACHINE MONITOR 1. Turn the starting switch ON. 2. the lamp lig ht up for approx sounds f or appro x. 1 sec. If the la mps not light the and centra the warning alarm buzzer probably a failure or