12. OPERATION 12.3 OPERATIONS AND CHECKS AFTER STARTING ENGINE ¤ WARNING Emergency stop If there has been any abnormal actuation or trouble, turn the starting switch key to the OFF position. If the work equipment is operated without warming the machine up sufficiently, the response of the work equipment to the movement of the control lever will be slow, and the work equipment may not move as the operator desires, so always carry out the warming-up operation. Particularly in cold areas, be sure to carry out the warming-up operation fully. 12.3.1 WHEN NORMAL NOTICE When the hydraulic oil is at a low temperature, do not carry out operations or move the levers suddenly.
Always carry out the warming-up operation. This will help to extend the machine life. Do not suddenly accelerate the engine before the warming-up operation is completed. Do not run the engine at low idling or high idling continuously for more than 20 minutes. This will cause leakage of oil from the turbocharger oil supply piping. If it is necessary to run the engine at idling, apply a load from time to time or run the engine at a mid-range speed. After starting the engine, do not immediately start operations. First, carry out the following operations and checks. AM090400 1.
Turn fuel control dial 1 to the center position between LOW IDLING (MIN) and HIGH IDLING (MAX) and run the engine at medium speed for about 5 minutes with no load. Mid-range speed MIN Low idling AN113930 2. While running the engine at medium speed, press working mode switch 2 until the heavy-duty operation mode lamp is turned on. H/O G/O F/O L/O B/O H M AD157770 2-55