Find the right part faster
Multiple models matched. Select your model to confirm fit.

Valve seat
When it comes to maintaining the performance and reliability of your Lawn Boy string trimmer, using genuine OEM valve seat replacement parts is crucial. At Repair Clinic, we offer a wide selection of authentic valve seat replacements that ensure a precise fit and uphold the manufacturer's warranty. Proper valve seating is essential for optimal engine performance, as it ensures effective sealing of the combustion chamber. This helps prevent power loss and maintains fuel efficiency. If your string trimmer experiences issues like poor power output or difficulty starting, it may be time to inspect and replace the valve seats. You can explore our extensive inventory of Lawn Boy string trimmer parts to find the right fit for your model. For more comprehensive repair needs, visit our replacement parts page to order replacement parts online and ensure your equipment runs smoothly.
Find the right replacement parts for your Lawn Boy string trimmer to ensure optimal performance. Below are some frequently asked questions to guide you in maintaining your equipment.
First, disconnect the spark plug and remove the engine cover. Locate the valve seat and remove the old one using a valve seat cutter or similar tool. Install the new seat by pressing it firmly into place. Reassemble the parts in reverse order.
Common problems include the trimmer not starting due to a faulty spark plug or clogged carburetor, and the trimmer head not spinning due to a broken clutch or drive shaft. Replacing these parts can resolve these issues.
Visit Repair Clinic for a wide selection of genuine Lawn Boy string trimmer parts. With same-day shipping and a price match guarantee, you can buy with confidence. Shop lawn equipment parts and find Cub Cadet string trimmer parts for other needs.


Ensure your Lawn Boy string trimmer operates at peak performance by replacing worn valve seats. Finding genuine Lawn Boy valve seat replacements online is now easier than ever, with options to quickly locate parts using your trimmer's model or part number. Enjoy the convenience of same-day shipping, a No-Hassle 365-Day Returns policy, and a Price Match Guarantee, ensuring you get the best deal on OEM parts. Address common issues like rough running or starting problems by replacing the valve seat, which can help improve fuel flow and engine efficiency. For additional guidance on fixing these and other string trimmer issues, visit our String Trimmer Repair Help page. For more Lawn Boy string trimmer parts, check out our Green Machine String Trimmer Parts selection.
When looking for replacement parts for your Lawn Boy String Trimmer, identifying the correct model number is crucial. This number is typically found on a label or plaque on the trimmer itself. Check areas like the shaft, engine casing, or under the fuel tank. Having the model number allows you to quickly find and order the right string trimmer repair parts online, ensuring a seamless fix for your equipment.
Common issues like the trimmer head not spinning could be due to a broken clutch or damaged drive shaft. Replacing these components can be easily done once the model number is confirmed. For more help with other parts, explore our Craftsman String Trimmer Parts page for similar solutions.

Our dedicated customer service team is here to assist you in finding the perfect replacement parts for your String Trimmer. Whether you're dealing with a Lawn Boy String Trimmer valve seat issue or another brand, we offer expert support seven days a week. Utilize our live chat for quick assistance, ensuring you find the right OEM parts with ease. Our website features a convenient model/part number lookup, making it simple to identify and order the exact part you need. Enjoy great consumer policies like our No-Hassle 365-Day Returns and Price Match Guarantee. Common issues like a trimmer head that won't spin or a motor that runs rough can be tackled with genuine replacement parts. For troubleshooting, inspect the clutch assembly or replace the spark plug and air filter. Visit our String Trimmer Repair Help section for DIY guides and videos. Repair Clinic is your trusted partner for easy online ordering and reliable support.

Learn the correct way to replace your string trimmer line for optimal performance. Follow these simple steps to ensure smooth trimming and prevent frustrating tangles or breakage.

Is your string trimmer head not spinning? Common causes include a worn drive shaft, faulty clutch, broken trimmer head, or tangled line. Diagnose and fix the issue with these expert tips.

A faulty spark plug can cause engine misfires, hard starts, rough idling, or power loss. Learn how to recognize bad spark plug symptoms and when to replace them for smooth operation.