OPERATING THE MACHINE POWER MODE One of three engine speed modes, E, P or H/P mode, can be selected using power mode switch (1). E (Economy) Mode 1 Even if the engine speed is reduced in the E mode, digging force remains unchanged from that in the P mode. Although production is reduced slightly more than in the P mode, the fuel consumption and noise levels are reduced, allowing the machine to operate most efficiently. P Mode Operate the machine in this mode when performing normal work. H/P (High Power) Mode M1U1-01-015 WARNING: In the H/P mode, the engine speed will change quickly.
To ensure safety, be sure to turn pow- er mode switch (1) to the P or E mode position before starting such works as loading the machine on or off a trailer or lifting a load with the front attachment, which may result in personal accidents if the engine speed is suddenly changed. When rolling in the arm while digging deep trenches for example, more power may be required. In such cases, use the H/P mode. The maximum power of the machine can be utilized in this mode, increasing work efficiency when more power is required than in the P mode.
The H/P mode is activated and the engine speed is in- creased when the boom raise or the arm rolled-in operation is made with the engine fast idle speed set at faster than ap- prox. 1650 min -1 . NOTE: In the H/P mode, the engine speed changes depending on load applied to the machine. 5-14