Murray 40541A Parts Manual
![Murray 40541A Tractor manual cover](/images/TvqhPypiOVyRLaBfKdBwOSuM/thumbs/thumb175x175.webp)
To change the oil, first run the engine for a few minutes to warm it up. Turn off the engine and remove the oil drain plug. Allow the old oil to drain completely, then replace the drain plug and add new oil as specified in the manual.
Check the battery connections for corrosion or looseness. Ensure the fuel valve is open and there is enough fuel. Verify that the spark plug is clean and properly connected. If the problem persists, consult the troubleshooting section of the manual.
Ensure the tractor is turned off and the spark plug wire is disconnected. Lift the tractor and secure it. Remove the blade nuts with a wrench, then replace the blades with new ones, ensuring they are properly aligned and secured.
Use unleaded gasoline with a minimum octane rating of 87. Avoid using ethanol blends with more than 10% ethanol to prevent engine damage.
Locate the cutting height adjustment lever on the side of the tractor. Move the lever to the desired position to raise or lower the cutting deck to the preferred height.
Excessive vibration could be caused by unbalanced or damaged blades. Check for debris or damage on the blades and ensure they are properly balanced. If the issue persists, inspect the engine mounts and belts.
Regular maintenance should be performed every 25 hours of operation or at the beginning of each mowing season, whichever comes first. This includes checking the oil, air filter, spark plug, blades, and belts.
Check the transmission fluid levels and top up if necessary. Inspect the drive belts for wear or damage, and replace if needed. If the problem continues, consult a professional technician.
Ensure the tires are properly inflated, as uneven tire pressure can cause uneven cuts. Check that the blades are sharp and correctly installed. Adjust the deck level if necessary.
Always wear safety goggles and protective clothing. Ensure that all safety devices are in place and functioning. Do not operate the tractor on steep slopes, and avoid obstacles to prevent accidents.