Toro Grandmaster 21-inch 20563 Operator's Manual
![Toro Grandmaster 21-inch 20563 Mower manual cover](/images/HlklGlAgKNOUOowfZcKcXxkk/thumbs/thumb175x175.webp)
To start the Toro Grandmaster 21-inch 20563 Mower, ensure the fuel valve is open, the choke is engaged if the engine is cold, and the throttle is set to fast. Pull the starter handle briskly, and once the engine starts, move the choke to the off position.
If the mower does not start, check the fuel level, ensure the spark plug is connected properly, and verify that the air filter is clean. If these are fine, inspect the fuel line for blockages or damage.
Sharpen the mower blade at least once every 20-25 hours of use or at the beginning of the mowing season to ensure a clean cut and reduce stress on the engine.
The recommended oil type for the Toro Grandmaster 21-inch 20563 Mower is SAE 30 for temperatures above 32°F (0°C) and SAE 10W-30 for varying temperature conditions.
To adjust the cutting height, locate the height adjustment levers on each wheel. Move the levers to raise or lower the mower deck to the desired cutting height. Ensure all wheels are set to the same height for an even cut.
Excessive vibration can be caused by a damaged or unbalanced blade. Inspect the blade for damage and balance it if necessary. Check that all bolts and fasteners are secure.
To clean the undercarriage, ensure the mower is off and the spark plug is disconnected. Use a garden hose to spray away grass clippings and debris. For stubborn debris, use a brush or scraper.
At the end of the mowing season, clean the mower thoroughly, drain the fuel tank or add a fuel stabilizer, change the oil, and remove the spark plug to add a few drops of oil into the cylinder to prevent rust.
To replace the air filter, locate the air filter cover on the side of the engine. Remove the cover, take out the old air filter, and insert a new one. Replace the cover securely.
Store the mower in a dry, clean location. Ensure it is cleaned, the fuel system is either drained or treated with stabilizer, and the battery is disconnected if applicable. Cover the mower to protect it from dust and dirt.