Refill the engine to the correct level with fresh oil. Paper air filters should be replaced and foam or sponge air filters should be cleaned and soaked with fresh engine oil. The spark plugs should be cleaned or replaced. Wash your lawn-mower to remove last season's dirt and grease. Maintain or repair all safety devices too.
Sharp blades keep lawns healthy.
If your lawn is on a sandy soil, you'll need to sharpen your blade several times this summer. Make sure you don't sharpen a blade that's worn thin on the edges because pieces could break off producing lethal shrapnel. For assistance, refer to your operator's manual, or contact a qualified small engine repair and maintenance shop. Most people say they want to stay in their own home or a familiar location. What's more, there's evidence that people may remain healthier when familiar people and routines surround them.