MTD String Trimmer Filter Parts

MTD String Trimmer Air Filter Parts

MTD string trimmers rely on a clean air filter to start reliably and run smoothly. When your MTD trimmer struggles to start, runs rough, or loses power, a clogged or damaged air filter is often the culprit. Fuel-to-air ratio goes wrong when airflow is restricted, causing hard starts and poor performance.

We carry OEM MTD air filter elements, filter housings, and complete filter assemblies for Yard Machines, Yard Man, and other MTD-built trimmers. Spring-loaded filter covers, foam elements, and paper cartridges are all in stock. Check your model number to find the exact filter type — MTD uses both foam and pleated paper designs depending on the engine and year of manufacture.

• Clogged foam filter: trimmer hard to start, runs lean, loses power
• Torn paper filter element: dirt enters carburetor, plugs jets
• Missing or broken filter cover: unfiltered air damages engine
• Filter housing crack: vacuum leak, carburetor flooding
• Aged foam filter: becomes rigid, no longer seals properly

MTD String Trimmer Air Filter: Answers to Common Questions

What type of air filter does my MTD string trimmer use?

MTD trimmers use either foam or pleated paper air filters depending on the engine model and manufacturing year. Foam filters are common on smaller, older MTD engines — they're washable and reusable if cleaned gently. Pleated paper filters are more modern and don't need washing. Enter your trimmer's model number on our site to confirm the exact filter type and part number. Mixing up foam and paper can cause carburetor issues.

How often should I replace the air filter on my MTD trimmer?

A clean air filter should be checked every 20 to 25 hours of use, especially if you're trimming in dusty conditions. If the foam is visibly caked with dirt or the paper pleats are clogged, replace it immediately. A dirty filter starves the engine of air, making it run too rich and causing spark plug fouling, hard starts, and loss of power. Replace paper filters once per season; foam filters can be cleaned and reused, but replace them annually too.

Why is my MTD trimmer hard to start after sitting?

Hard starts after storage are often caused by a fuel system issue, but a clogged air filter can contribute — restricted airflow combined with stale fuel makes ignition even harder. Clean or replace the air filter first. If the trimmer still won't start, check the fuel line for cracks, replace the spark plug, and clean the carburetor. A primer bulb that doesn't draw fuel is another sign of a fuel system clog.

Can I clean and reuse my MTD foam air filter?

Yes — foam filters are designed to be cleaned and reused. Gently tap the foam against a hard surface to dislodge loose dirt. Rinse it under warm running water (no soap) and let it dry completely before reinstalling. If the foam is hard, brittle, or has tears, replace it. Paper filters cannot be cleaned — they must be replaced.

Order MTD String Trimmer Filter Parts Online

Ensure your MTD String Trimmer operates at peak efficiency by replacing its filter regularly. Finding genuine MTD String Trimmer filter parts online is simple and convenient, thanks to our user-friendly model and part number lookup tool. Enjoy the benefits of same-day shipping, ensuring you receive your parts quickly, and take advantage of our No-Hassle 365-Day Returns and Price Match Guarantee for the best value. Regular filter maintenance helps prevent issues like rough running or starting problems. If your trimmer stalls or won't start, a clogged filter might be the culprit. Replace it to keep your trimming tasks smooth and efficient. Find more about String Trimmer Repair to tackle any other issues you encounter. For additional MTD parts, browse our MTD String Trimmer Parts selection.

MTD String Trimmer Model Number: Where to Look

On MTD string trimmers, the model number is usually printed on a sticker or plate on the main housing near the engine. Some models have it on a label along the shaft, so check both areas if you do not see it right away. Look for a code that may include numbers and letters, and copy it exactly, including any dashes or suffixes. Type it into our model number lookup and the catalog narrows to parts made for your unit. This filters the full MTD string trimmer parts selection, not just filters or another single part, so you can match the parts associated with your complete model. The result is a quicker, more accurate repair with fewer compatibility questions.