McCulloch MC55Y21RA Spare Parts List

Ensure the mower is on a flat surface. Check that there is enough fuel and oil. Pull the safety handle towards the handlebar and then pull the starter rope firmly.
Use unleaded gasoline with a minimum octane rating of 87. Avoid using gasoline with more than 10% ethanol content.
Locate the height adjustment lever near the wheel. Move the lever to the desired cutting height position. Make sure all four wheels are adjusted to the same height.
Check the fuel level, ensure the spark plug is connected, and inspect the air filter for clogs. If the problem persists, consult the manual for further troubleshooting steps.
Change the oil after the first 5 hours of use, then every 25 hours of operation or at least once per mowing season.
After the engine has cooled, use a brush or cloth to remove grass clippings and debris from the deck and blades. Avoid using water to clean the engine directly.
Disconnect the spark plug wire, tilt the mower for access, and use a wrench to remove the blade bolt. Replace with a new blade, ensuring it is installed correctly, and tighten the bolt securely.
Check for loose parts, ensure the blade is balanced and sharpened, and inspect for any damage to the mower deck or engine mounts.
Regular maintenance like sharpening the blade, changing the oil, and cleaning the air filter can significantly improve performance.
The model and serial number can be found on a label located on the mower deck or near the engine. Refer to the manual for exact location details.