Murray 40542D Parts Manual
![Murray 40542D Tractor manual cover](/images/IwFMLPpVSeGbabEZkjavMFKk/thumbs/thumb175x175.webp)
To change the oil, first run the engine for a few minutes to warm it up, then turn it off. Place an oil drain pan under the engine and remove the drain plug. Allow the oil to fully drain, replace the plug, and refill with the recommended oil type and quantity.
The Murray 40542D tractor is designed to run on unleaded gasoline with an octane rating of 87 or higher. Avoid using fuel with more than 10% ethanol.
If the tractor won't start, check the battery connections for corrosion, ensure the fuel tank is filled, and inspect the spark plug for wear or damage. If these are in order and the issue persists, consult the user manual or a professional technician.
To adjust the cutting height, locate the height adjustment lever near the driver's seat. Move the lever to the desired position, ensuring the tractor is on a flat surface for an even cut.
The air filter should be checked and cleaned every 25 hours of operation and replaced if it appears dirty or damaged. Regular maintenance helps ensure optimal engine performance.
If the blades are not cutting effectively, they may be dull or damaged. Remove and sharpen the blades, or replace them if they are beyond repair. Be sure to disconnect the spark plug wire before servicing the blades.
Regularly clean the battery terminals to prevent corrosion, check the charge level, and ensure that the battery is securely mounted. During off-season storage, use a trickle charger to maintain battery health.
The recommended tire pressure for the Murray 40542D is typically between 10-14 PSI for the rear tires and 12-15 PSI for the front tires. Always refer to the manual for specific guidelines.
Before storage, clean the tractor, change the oil, stabilize the fuel, and remove the battery to prevent discharge. Store in a dry, covered area to protect it from the elements.
Excessive vibration can be caused by unbalanced blades, loose parts, or damaged belts. Inspect these components and tighten, replace, or balance them as needed to resolve the issue.