Briggs & Stratton Lawn Mower Small Engine Flywheel Key 222698S

This video provides step-by-step instructions for replacing the flywheel key on Briggs and Stratton small engines, commonly found in lawn mowers, riding tractors, zero-turn radius mowers, wheeled edgers, pressure washers, and generators. The most common reasons for replacing the flywheel key are if the engine is hard to start or won’t start.

Click here to purchase Part #222698S:

Additional small engine repair, troubleshooting tips, help with finding your model number, and part replacement videos:

All the information in this flywheel key replacement video is applicable to the following brands: Briggs & Stratton, Toro, John Deere, Lawn Boy, Craftsman, Murray, Wheel Horse

Tools used: screwdriver, nutdriver, socket wrench, flat-head screwdriver

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12 thoughts on “Briggs & Stratton Lawn Mower Small Engine Flywheel Key 222698S

  1. I broke a flywheel key as a result of finding a cut-off fence post in deep grass. The blade was obviously ruined. After replacing the blade, the lawn mower still wouldn't start. I was advised that I probably split the key.

    After watching this video and one other on the subject, I was able to replace the flywheel key. It went pretty smooth. Kudos to repairclinic for putting this information here.

  2. I installed a new pull string and it retracts but once I install the cover back over the fly wheel it will pull out but wont go back to start the motor.

  3. I hit a root, and had the same problem. It wouldn't start. I followed your guide and found the split key. I replaced it and reassembled, but it still won't start. It tries to turn over, but just won't catch. Any ideas? It's a Briggs and Stratton 128mo2-0133-f1. Thanks for posting these videos. They are awesome!

  4. I cannot remove the flywheel on my 13.5hp briggs engine,i tried with a puller to the point where the bolts start to bend an it does not budge.Any ideas?

  5. The flywheel key I bought won't fit. My engine is a Briggs and Stratton 123K02-0258-E1. The key I bought is a B&S 222698S. I tried every possible way to fit it into the slot (which I first aligned with the indentation in the flywheel shaft). It won't go in. It is slightly too big. Should I try to pound it in with a hammer? Thanks!

  6. I have had a problem with my lawnmower where it is surging. I replaced the carb thinking that was the problem, it had a stripped bolt so it's a good thing I replaced it but it is still surging. could this be a symptom of a sheared flywheel key?

  7. hello ive got a 6.5 engine on a wacker plate. the recoil keeps yanking back and the flywheel key is not damaged and ive changed the recoil mechanism and its still yanking out my hand? any ideas???

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