The standard factory set up on the Hitachi ZX 135-6 has a proportional control thumb wheel fitted in the right hand lever but there are no electronics or pilot system fitted to use this function , control of the double acting service is only available using the hydraulic foot pedal to make full use of this function you need the following kit ,Prop control double acting pilot circuit for Hitachi ZX135-6 kit has all the parts needed to make both thumb wheel control and foot pedal control work the double acting circuit the machine dash board flow control system still works as normal ,kit comes with all parts needed to fit , full fitting instructions and telephone technical back up . Kit is perfect for giving fine hand control of attachments such as tree shears and grabs
