This video provides step-by-step instructions for replacing the throttle control assembly on Echo leaf blowers.
Leaf Blower- Model PB580T
Leaf Blower Throttle Control Cam Replacement
Step 1: Unthread the retaining knob screw to release the throttle control from the blower tube clamp.
"Step 1: Make sure the engine has cooled and the on/off switch is in the ""off"" position.
Step 3: Lift off the right half.
Step 4: Lift out the trigger and detach the throttle cable.
Step 5: Unthread the mounting screw to release the lock lever.
Step 4: Remove the air filter.
Step 7: Prepare the new throttle control cam for installation by transferring the nut from the old cam to the new one.
Step 8: Confirm the wave washer is in place then align the new cam in the throttle housing.
Step 9: Reinstall the lock lever by aligning the notch in the lever with the tab on the cam.
Step 10: Thread and tighten the mounting screw.
Step 11: Confrim the trigger sping is intact on the trigger then reattach the throttle cable to the trigger.
"Step 12: Keeping the spring depressed, align the trigger on the post. "
"Step 11: Unclip the cable from the blower housing retaining clip and pull it through the housing and blower tube cable clip.
Step 14: Realign the two halves of the throttle control and thread the screws.
Step 15: Reposition the throttle control in the blower tube clamp.
Step 16: Thread and tighten the retaining knob screw.
Attention: You can rotate the throttle cable adjustment screw clockwise to increase tension on the cable or counter-clockwise to decrease the tension.
Congratulations! Your leaf blower should be ready for use.
Step 17: Connect the on/off switch wires and secure the wire in the housing tabs.
Step 19: Reinstall the carburetor by first attaching the fuel lines to the appropriate ports.
Step 21: Realign the baffle in the air filter base then insert the bolts.
Step 23: Align the carburetor followed by the outlet gasket.
Step 25: Replace the air filter.
Step 27: Refill the fuel tank if necessary.