. OPERATION DETAILED CONTROLS AND GAUGES Basic Operation of Machine Monitor If There Is Abnormality When Starting Engine If there is any abnormality when starting the engine, the check before starting screen (A) changes to the 3 - 6 aintenance in terval warning screen (B), warning scree n (D), or error screen Af ter displayin g the check before the erval warnin g screen (B). Af ter displaying reen (C). Af ter displaying the check before s tarting sc reen (A) for 2 seconds, the screen changes to the war ning screen (D) error screen