The replacement throttle cable make from materials lasting use For optimal capability with your, maintenance is important Use this replacement cable on your lawns to sure capability year after year Warm Tip Please check the model of your device before placing an order Make sure that this part the exact part number between the part you want to replace Party number The cable set included 1 x replacement throttle cable for Cable part number is 578864301, 590900001 The 578864301 replacement cable for string trimmer, please refer the below model 525L, 525 LS, 525 RJD, 525 RJX, 525 RK, 525 RX, 322 L, 522 L Easy Installation 1.Sure the machine is turned off and the ignition plug wire is disconnected 2.Disconnect the ends of the old throttle cable and disconnect from the throttle control and the carburetor or throttle body (You could refer the service manual) 3.Connects the ends of the new cable to the throttle control and the carburetor or throttle body Make sure the are tight and secure, Manufacturer: Kfwfuaee