Toro ProLine 21-inch 22037BC Operator's Manual
![Toro ProLine 21-inch 22037BC Mower manual cover](/images/AKZhBvFiQidPXvmkFnRBwFlq/thumbs/thumb175x175.webp)
To start the Toro ProLine 21-inch 22037BC Mower, ensure that the fuel valve is open and the engine switch is in the 'ON' position. Pull the starter rope handle slowly until you feel resistance, then pull quickly to start the engine.
Use clean, fresh, unleaded gasoline with an octane rating of 87 or higher. Avoid using gasoline with more than 10% ethanol.
Change the oil after the first 5 hours of use, then every 50 hours or at least once a season.
Common reasons include a dirty air filter, old or bad fuel, a faulty spark plug, or a clogged fuel line. Check these components and replace if necessary.
After disconnecting the spark plug wire, tilt the mower to the side with the air filter and carburetor facing up. Use a brush and water to clean any grass clippings and debris from the deck.
Yes, the Toro ProLine 22037BC is compatible with mulching blades. Ensure the blade is installed correctly and sharpened for optimal performance.
Before storing, clean the mower, change the oil, remove the spark plug and add a few drops of oil into the cylinder, and drain the fuel or add a fuel stabilizer.
The cutting height can be adjusted using the height adjustment levers located on each wheel. Move the levers to the desired position for your preferred grass height.
Excessive vibration can be caused by a damaged or unbalanced blade. Inspect the blade for damage and balance it or replace it if necessary.
To replace the air filter, remove the cover by pressing the tabs, take out the old filter, and insert a new one. Ensure the filter is seated properly before replacing the cover.