For the best performance, you should keep the mower housing free of built up grass. Clean the underside of your mower after each use. Your lawn mower is equipped with a fitting that allows for quick and easy cleaning of the underside of the housing.
First, move the lawnmower to an area of cut grass or another hard surface. After removing the grass catcher, close the mulcher door then connect the garden hose to the fitting where shown. Do not route the hose under the mower. Turn on the water supply and check for leaks at the fitting. If no leaks are present, start the engine and let it run until the underside of the lawnmower is clean. Once complete, shut off the engine, then shut off the water supply and remove the hose from the fitting. Start the engine and let it run for a full minute to remove excess water from the mower.
Before tipping the lawnmower to drain the oil, empty the fuel tank by running the engine until the fuel tank is empty. Disconnect the spark plug wire from the spark plug and place the wire where it cannot come in contact with the plug. Then, remove the oil-fill cap and lay aside on a clean surface. Tip the lawn mower on its side and drain the oil into a suitable container. Rock the lawn mower back and forth to remove any oil trapped inside the engine. Be sure to wipe off any spilled oil from the lawnmower or side of the engine.
Fill the engine with oil. Slowly pour about 16 ounces of oil down the oil-fill spout into the engine. Wait one minute to allow the oil to settle. Use the gauge on the oil-fill cap dipstick for checking level. Insert the dipstick into the tube and rest the oil-fill cap on the tube. Do not thread the cap into the tube while taking the reading. Continue adding small amounts of oil and rechecking the dipstick until it reads full. Do not overfill or the engine will smoke on start-up. Always be sure to retighten the oil-fill cap before restarting the engine. Finish by reconnecting the spark plug wire to the spark plug.
Your engine will not run properly and may be damaged by using a dirty air filter. Replace the air filter every 100 hours of operation or every season whichever occurs first. Service the air cleaner more often under dusty conditions.
To clean the air filter, remove the cover. Next, carefully remove the cartridge. Clean the filter by gently tapping it on a flat surface. If very dirty, replace the cartridge. Install the new or cleaned cartridge, then replace the cover.