Murray 40564x51B Parts Manual
![Murray 40564x51B Tractor manual cover](/images/JdXCoKepWoNeAAajrIrdqSvL/thumbs/thumb175x175.webp)
To change the oil, first warm up the engine to allow the oil to drain easily. Turn off the engine and remove the spark plug wire for safety. Place a pan under the oil drain plug, remove the plug, and let the oil drain completely. Replace the drain plug, then fill with the recommended oil type and capacity.
Check the fuel level and ensure the fuel valve is open. Inspect the battery connections for corrosion, and ensure the battery is charged. Verify that the spark plug is clean and properly connected. Make sure the safety switch is engaged and the transmission is in neutral.
Disconnect the spark plug wire and remove the mower deck. Use a socket wrench to remove the blade bolts. Clamp the blade in a vice and sharpen using a file or grinder, maintaining the original angle. Balance the blade before reinstalling to avoid vibration.
Regular maintenance should be performed at the start and end of each mowing season. This includes oil changes, air filter checks, blade sharpening, and inspection of belts and cables. Check the owner’s manual for a detailed maintenance schedule.
Use unleaded gasoline with a minimum 87 octane rating. Avoid using gasoline with more than 10% ethanol content as it can damage the engine components over time.
Locate the cutting height adjustment lever, typically found near the wheel. Move the lever to the desired height position. Ensure the tractor is on a level surface when making the adjustment to ensure an even cut.
Uneven cutting can be caused by dull or unbalanced blades, uneven tire pressure, or an improperly leveled mower deck. Ensure blades are sharp, balanced, and the deck is leveled according to the manual.
Check for unbalanced or damaged blades, loose bolts, or debris lodged in the mower deck. Ensure the blades are balanced and securely fastened. Inspect the mower deck and clear it of debris.
Inspect the drive belt for wear or damage and replace if necessary. Check the tension of the belt and adjust according to the manual. Ensure the transmission fluid is at the correct level and top up if needed.
Clean the tractor thoroughly to remove grass and debris. Drain the fuel tank or add a fuel stabilizer. Change the oil and oil filter. Remove the battery and store it in a cool, dry place. Cover the tractor to protect it from dust and moisture.