How to Repair a Weed Eater Carburetor

What You'll Need
Allen wrench
Phillips Screwdriver
Carburetor cleaner
Soft wire brush
Carburetor repair kit (includes replacement parts and gaskets)
Flat head screwdriver

Making repairs to the carburetor of your weed eater will help it to run more smoothly and last longer. With a repair kit you will have the parts you need to repair the carburetor.

Step 1 – Disassemble the Carburetor

Remove the allen screws holding the cover on. Remove the air filter and the grid. Remove the two internal allen screws. Now remove the air filter housing. Inspect the fuels lines for damage to see if they need to be replaced. Take the carburetor apart by unscrewing the screw holding it together. Take the cover off. Peel off the pump diaphragm.

Step 2 – Remove the Diaphragm

Remove the four screws on the other side of the carburetor. Take off the cover and then the next layer pops off as well. You will see a wheel-shaped diaphragm called the metering diaphragm. Peel off the diaphragm. Inspect the diaphragm to see if it is stiff. If it has little movement and is too stiff it will need to be replaced.

Step 3 – Remove the Needle

Remove the screws around the needle. Remove the pin; the needle assembly with the spring will come out with it. Inspect the tip of the needle. If a ring has been worn into the tip then it will need to be replaced. Remove the remaining plate and gasket so that the holes underneath can be cleaned. Remove the adjusting screw on the carburetor.

Step 4 – Clean the Parts

Spray the parts of the carburetor with carburetor cleaner. Spray it into the small holes. Be sure to wear safety glasses so it doesn’t splash in your eyes. Wipe off any black residue with a cloth. Remove any gasket residue with a soft wire brush. Let the parts soak in the cleaner for at least one hour.

Step 5 – Reassemble the Carburetor

Start by putting the spring in the center and put the screw next to it part way in its hole. Now take the metering lever with the pin and insert the pin with the spring under the notch of the lever and under the screw. Now tighten the screw. Now install the plate over that with the new gasket attached. Insert the two screws in the plate and tighten them. The meter lever should be flush with the body of the carburetor. Put the gasket for the metering diaphragm on now. Then put the diaphragm on top matching up the holes on the edges. Insert the cover that goes under the primer plate. Now put the primer plate on top. Insert and screw down the four screws at the corners. Install the adjustment screw. Screw it in all the way with a flat head screwdriver but not too tightly. Then unscrew one-and-a-half turns.

Step 6 – Assemble the Other Side

On the other side insert the screen. Use a blunt object to push down on the screen gently. Insert the gasket onto the cover and then put the diaphragm on top of the gasket. Then place the cover on. Put the top screw in and tighten it.

Step 7 – Put the Carburetor on the Weed Eater

Now put the carburetor back on the weed eater. First attach the throttle lever. Match the carburetor up with the holes on the weed eater housing. Hold it in place and put the carburetor cover with the two screws in place. Then screw in the two screws. Next connect the fuel lines. The smallest line goes to the connector in the front. Connect the larger line to the other connector.