Toro Recycler 21-inch 20054 Operator's Manual

To start the mower, ensure the fuel valve is open, the spark plug wire is connected, and the throttle is set to 'fast'. Pull the starter handle firmly.
Check if there's fuel in the tank and ensure the spark plug is connected. Also, inspect the air filter for clogs and ensure the mower is on a level surface.
Change the oil after the first 5 hours of use, then every 25 hours or at the start of each mowing season.
Use SAE 30 oil for optimal performance. In colder climates, SAE 5W-30 can be used.
Ensure the mower is off and cool. Use a hose to rinse the underside of the deck. A brush can help remove stubborn clippings.
Disconnect the spark plug for safety. Remove the blade and use a file or grinder to sharpen it evenly. Balance the blade before reinstalling.
Check for debris on the blade and ensure it's balanced. Tighten any loose bolts on the engine or frame.
Locate the height adjustment levers on each wheel and adjust them to the desired height setting.
Empty the fuel tank, clean the deck, and disconnect the spark plug. Store the mower in a dry, sheltered location.
Ensure the bag is empty and the blade is sharp. Mow when the grass is dry and avoid cutting more than one-third of the grass height.