It is important to continue to cut your lawn every 5-7 days at 2.5-3" during the fall growing season. Your grass will continue to grow into early November.
When you have done the last mow (in mid to late November unless you live on the west coast of Canada) you will likely be happy to put your lawn mower away for the winter. But before you store it, a little service now can save you from much aggravation next spring. We recommend you follow these service steps for gas mowers. Disconnect the ignition wire from the spark plug before starting any maintenance, to avoid injury.
Clean or replace spark plug. Remove the spark plug and check the electrode for corrosion and dirt. Clean, or replace with a new plug.
Check the oil. It’s a good idea to change the oil now, and again after every 25-hours of running time.
Clean or replace the air filter. Unscrew the bolt that holds the air cleaner. Replace with a new one. Foam filters that are not too dirty can be rinsed clean in warm water and reinstalled when dry.
Check the blade. Mower blades should be sharpened regularly. Dull blades should be sharpened professionally, and damaged blades should be replaced.
Check the fuel. Gas left over the winter will go stale, causing problems in the spring. You can drain or run the machine until empty. We prefer to add a fuel stabilizer to the tank and run the engine for 5-10 minutes so treated gas reaches all carburetor parts. If you do nothing else, this last step can prevent a lot of problems next spring!