How to Clean a Lawn Mower Carburetor

If your lawn mower is hard to start, stalls, or runs rough, the carburetor may be dirty. Cleaning it is a simple fix that can bring your mower back to life.

Using the right replacement pieces keeps performance steady and avoids future breakdowns. Whether you’re shopping for Graco sprayer parts, chainsaw replacement parts, diesel engine components, or even power tools parts, sticking to original equipment ensures durability and reliability.

Tools You’ll Need

1. Screwdriver (flathead or Phillips, depending on your mower)
2. Socket wrench set
3. Carburetor cleaner spray
4. Small brush or toothbrush
5. Rag or paper towels
6. Fuel-safe container (to catch old gas)
7. Gloves and safety glasses

Disconnect the spark plug for safety. This ensures the mower won’t accidentally start while you’re working.

Take off the air filter housing so you can reach the carburetor. A clogged filter can also affect performance, so check it while you’re there.

Use your screwdriver or socket wrench to remove the bolts holding it in place. Be gentle so you don’t damage the gaskets or linkages.

Empty the carburetor bowl into a fuel-safe container. Old fuel often leaves behind residue that clogs the jets.

Spray directly into all passages and openings. The cleaner dissolves varnish, dirt, and fuel deposits.

Use a small brush or toothbrush to scrub stubborn buildup. Pay attention to the jets since they control the fuel flow.

Put all the parts back in reverse order. Make sure bolts are tightened but not over-torqued.

Once everything is back in place, reconnect the spark plug and start the mower. It should run smoother with better throttle response.