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How to Troubleshoot a Lawn Mower That Won't Start
  1. Check the Gas Tank. ...
  2. Check the Fuel Filter. ...
  3. Test the Battery. ...
  4. Check the Oil Level. ...
  5. Check the Spark Plugs. ...
  6. Clean or Replace the Air Filter. ...
  7. Raise the Height of Your Mower. ...
  8. Clean the Underside of Your Mower.
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