How to Rebuild a Toro Mower Carburetor

Raise the engine cover on the Toro and use your wrench to remove the negative battery cable. Also remove the spark plug wire.

Remove the air filter cover and the top plastic screw; lift the cover off. Remove the wing-nut that sits on top of the filter housing itself. Remove the filter housing lid and the filter.

Use an Allen wrench to remove the two bolts that run through the body of the carburetor below the air filter cover. Set these long bolts on the side.

Lift the carburetor partially free from the engine. Use pliers and a screwdriver to remove the fuel lines attached to the carburetor jets. Remove the throttle linkage from the control arm.

Remove the carburetor's metering rod with the socket set to open the fuel delivery system. Throw out the old meter rod bolt. Spray this area out thoroughly with the spray carburetor cleaner. Also clean the metering rod completely. Re-insert the metering rod and tighten it back in place with the new bolt.

Remove the float valve bolt and clean that area well with the spray carb cleaner, a rag and an old toothbrush if there is any heavy corrosion there. Scrub inside the float valve and then re-attach it.

Clean out all the ports on the carburetor with the spray cleaner and allow it to dry.

Set the carb back into place in the mower. Use the pliers to connect the throttle linkage to the control arm. Spray each fuel line individually with carb cleaner and then re-attach them to the carburetor ports, using the pliers and screwdriver.

Slip the two long bolts through each end of the carburetor and tighten them down with the Allen wrench. Replace the air filter and air filter cover. Reconnect the negative battery cable and the spark plug wire.