This blog is a step-by-step instruction for replacing the carburetor on a lawn mower. The most common reasons for replacing the carburetor is if the engine is hard to start, leaks gas, runs poorly, won’t start or stay running.

Replacement

Before you begin the replacement, you need to make sure the engine has cooled and remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
Step 1: Your first step is to loosen the screw securing the air filter cover and pull the cover off along with the air filter and the pre cleaner if your engine is equipped with one.
Step 2: Now remove the screw to release the control cover. Remove the screws securing the filter base plate. Then detach the breather tube and set the plate aside.
Step 3: Release the clamp securing the fuel line to pull the fuel line off of the carburetor and plug the engine to prevent a gas spill.
Step 4: Next remove the screw to release the choke lever assembly and move it aside. And remove the mounting bolts that secure the carburetor, rotate the old carburetor to remove it from the throttle control lever and pull the old O-ring from engine intake tube. You are now ready to install the new carburetor.
Step 5: Insert the new O-ring onto the intake tube, position the new carburetor onto the throttle control lever and mount it to the engine. Secure the new carburetor with the bolts.
Step 6: Reposition the choke lever assembly and secure it with the screw. Reattach the fuel line and secure it with the clamp. You can replace the gasket in the filter plate with a new one. Then reinsert the breather tube and secure the plate with screws. Replace the control cover and secure it with the screw. You can use a rag to lean off the filter cover if necessary, then reinsert the pre cleaner into the cover with the arrows pointing upward if applicable. You also need to position the air filter on top with the paper element facing the pre cleaner. Insert the cover’s tabs into the slots then rotate upward and tighten the screw.
With the repair completed, reattach the spark plug wire and boot. Now your lawn mower should be ready for use.

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