OPERATION MACHINE OPERATIONS AND CONTROLS WORK EQUIPMENT CONTROLS AND OPERATIONS 3 If the lever is operated when the engine speed has been lowered by the auto-deceleration function, the engine speed will suddenly rise, so operate the levers carefully. Use the control levers to operate the work equipment. Note that when the levers are released, they return to the HOLD position and the work equipment is held in that position. The work equipment is operated by the left and right work equipment control levers. The left work equipment con- trol lever operates the arm and swing, and the right work equipment control lever operates the boom and bucket.
The movements of the lever and work equipment are as shown in the diagrams on the right. When the levers are released, they automatically return to the neutral position and the work equipment is held in place. q If the work equipment control levers are returned to the neutral position when the machine is stopped, even if the fuel control dial is set to FULL, the auto-deceleration mechanism will act to reduce the engine speed to a mid-range speed.
REMARK With this machine, an accumulator is installed in the operating circuit, so if less than 15 seconds has passed since the engine was stopped, when the starting switch is turned to the ON position even when the engine is stopped, it is possible to operate the levers to lower the work equipment to the ground. In addition, this operation can also be used to release the remaining pressure in the hydraulic cylinder circuit or to lower the boom after the machine has been loaded onto a trailer. Arm operation Swing operation 3-91 WARNING