Toro 21-inch 26637 Operator's Manual
![Toro 21-inch 26637 Mower manual cover](/images/DJDNRmYbmWPQCjjRwLFwssXT/thumbs/thumb175x175.webp)
To start the Toro 21-inch 26637 Mower, check the oil level, ensure the fuel tank is filled with fresh gasoline, and set the throttle to the 'Fast' position. Pull the starter handle slowly until you feel resistance, then pull briskly.
It is recommended to change the oil after the first 5 hours of use, and then after every 25 hours of use or at the beginning of each mowing season.
If the engine does not start, check the fuel tank to ensure it has fresh gasoline, inspect the spark plug for wear or damage, and ensure that the air filter is clean. Additionally, check the fuel line for any blockages.
Ensure the blade is sharp and balanced, mow with a full tank of gas, and cut grass when it is dry. Adjust the mowing height according to the lawn condition for optimal results.
Regular maintenance includes checking the oil level before each use, cleaning the air filter every 25 hours, sharpening the blade annually, and checking the spark plug every 100 hours or annually.
To clean the underside of the mower deck, ensure the engine is off and disconnect the spark plug wire. Tilt the mower on its side, and use a brush or hose to remove grass clippings and debris.
Use unleaded gasoline with an octane rating of 87 or higher. Avoid using gasoline with more than 10% ethanol content.
To replace the air filter, remove the filter cover, take out the old filter, and insert a new one. Ensure it is seated properly, then reattach the cover securely.
Excessive vibration can be caused by an unbalanced or damaged blade. Inspect the blade for damage and ensure it is properly balanced. Tighten any loose components.
For winter storage, run the engine until it is out of fuel, change the oil, clean the mower thoroughly, and remove the spark plug. Store the mower in a dry, sheltered location.