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Lawn mower flywheel key (woodruff key). The flywheel key aligns the flywheel in the correct position on the crankshaft. If the engine stops suddenly due to hitting a hard object, the flywheel key shears in half to prevent damage to the engine. If the flywheel key is broken, the engine won't start.

Flywheel Key

Flywheel key
When your Exmark lawn mower's flywheel key requires a replacement, opting for genuine OEM parts is crucial to maintain the manufacturer's warranty and ensure a precise fit. At Repair Clinic, we provide a comprehensive selection of Exmark Lawn Mower repair parts, including flywheel keys, designed to meet the exact specifications of your model. Our genuine OEM flywheel keys are engineered to support optimal engine performance by securing the flywheel in perfect alignment with the crankshaft. If your lawn mower is experiencing issues like stalling or misfires, a worn or sheared flywheel key might be the culprit. Replacing it with a genuine part can resolve these problems effectively. Explore our extensive inventory of replacement Lawn Equipment Parts to find what you need. For comprehensive lawn mower parts, visit our dedicated Exmark Lawn Mower Parts section for other quality components.
Having issues with your Exmark lawn mower's flywheel key? Find answers to common questions about replacing this crucial component to keep your mower running smoothly.
First, remove the spark plug to prevent accidental starting. Then, remove the flywheel nut and carefully lift the flywheel off. Replace the damaged key with a new one, ensuring it fits securely in the keyway. Reassemble the flywheel and tighten the nut securely.
A sheared flywheel key may cause your Exmark lawn mower to backfire, run erratically, or fail to start. If you experience these issues, inspect the flywheel key for damage and replace it if necessary.
To prevent damage, avoid sudden stops or impacts with hard objects while mowing. Regular maintenance and inspections can also help identify potential issues before they cause key failure.
For more information on maintaining your lawn equipment, visit our Lawn Equipment Parts page. If you are dealing with a different issue, such as a damaged Honda Lawn Mower, we have resources for you too!


Ensure your Exmark Lawn Mower operates efficiently with genuine OEM flywheel key replacement parts from Repair Clinic. Flywheel keys are crucial for maintaining the timing and synchronization of your lawn mower's engine, preventing potential damage. Use our model number lookup tool to find the exact flywheel key for your Exmark mower. Enjoy same-day shipping, a No-Hassle 365-Day Returns policy, and our Price Match Guarantee to make your shopping experience seamless. For installation guidance, visit our Lawn Mower Repair Help page. Explore additional Lawn Mower Steering Parts for related repair solutions.
Locating your lawn mower's model number is crucial for finding the right replacement parts, such as a flywheel key. Typically, the model number is found on a label or metal plate on the mower's engine, deck, or frame. Once identified, it becomes straightforward to search for the necessary lawn mower parts online. Use the model number for efficient parts lookup and hassle-free ordering. Whether you need lawn mower replacement parts or specific repair parts, having the correct model number ensures compatibility and simplifies the process of purchasing genuine OEM parts. For issues like a lawn mower hard to start or blades not engaging, identifying the right parts through the model number can lead to effective solutions. For other replacement parts, visit our page on Honda Lawn Mower Parts to explore a wide range of options.
At Repair Clinic, our dedicated support team is available seven days a week to assist you with finding the right Lawn Mower parts, including flywheel keys for your Exmark mower. Our user-friendly online system lets you quickly locate the exact replacement part by entering your model or part number, ensuring you get genuine OEM parts for reliable repairs. If your Lawn Mower's blades won't engage or it's hard to start, our expert troubleshooting assistance can guide you in identifying and fixing these issues. Enjoy peace of mind with our Price Match Guarantee and No-Hassle 365-Day Returns. Access our Lawn Mower parts online and use our live chat for quick support. We're here to help you confidently order and repair your equipment with ease.

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