Disconnect the spark plug wire
Turn off the fuel valve if equipped
Drain or clamp the fuel line
Remove the air filter cover and air filter
Take a photo of the carburetor linkages and hose positions
Remove the carburetor from the engine
Disconnect the throttle linkage, governor spring, and fuel line
Remove the carburetor bowl
Remove the float, float pin, and needle valve
Remove the main jet, emulsion tube, and other removable jets
Spray carburetor cleaner through all passages and openings
Use compressed air to blow out passages
Clean the bowl, float, and jets with carburetor cleaner
Use a soft brush or nylon bristle to remove deposits
Do not use wire that can enlarge jets or passages
Replace damaged gaskets, O-rings, and seals
Reassemble the carburetor
Reinstall the carburetor on the engine
Reconnect the fuel line and linkages
Reinstall the air filter and cover
Reconnect the spark plug wire
Add fresh fuel
Start the mower and check for leaks and proper operation