Murray 46379x92A Parts Manual
![Murray 46379x92A Tractor manual cover](/images/HYnJZZyCagYVGIusyKLLPtvQ/thumbs/thumb175x175.webp)
To change the oil, run the engine until it is warm, then stop it and disconnect the spark plug wire. Remove the oil drain plug and allow the old oil to drain completely. Replace the drain plug, and refill the engine with new oil, checking the oil level with the dipstick.
The recommended spark plug for the Murray 46379x92A Tractor is a Champion RJ19LM or an equivalent. Ensure that the spark plug is properly gapped to 0.030 inches before installation.
To adjust the cutting height, locate the height adjustment lever on the side of the mower deck. Move the lever to the desired cutting height position, ensuring that the deck is level for an even cut.
Check the fuel level and ensure there is fresh, clean fuel in the tank. Verify the spark plug is in good condition and properly connected. Examine the air filter for clogs and clean or replace it if necessary. Lastly, check the battery for sufficient charge and connections.
First, disconnect the spark plug wire for safety. Remove the mower deck and secure the blades. Use a file or a grinder to sharpen the blades evenly, maintaining the original angle. Balance the blades before reinstallation to prevent vibration.
The recommended maintenance schedule includes changing the oil every 25 hours of use, checking the air filter every 10 hours, replacing the spark plug annually, and sharpening or replacing the blades as needed. Regularly inspect belts and cables for wear.
Remove the air filter cover and take out the filter. If it's a foam filter, wash it with warm soapy water, rinse, and let it dry completely before reinstalling. For paper filters, gently tap to remove debris or replace if heavily soiled.
Excessive vibration can be caused by unbalanced blades, loose parts, or damaged components. Check that the blades are balanced and secure, and inspect the deck and engine mountings for tightness. Replace any damaged parts.
To replace the drive belt, first remove the mower deck. Release the tension on the belt by loosening the idler pulley. Slide the old belt off and install the new belt, ensuring it is seated correctly on all pulleys. Re-tension the belt and reattach the mower deck.
Uncut strips may be due to dull blades, improper deck level, or incorrect ground speed. Sharpen the blades, check and adjust the deck to ensure it's level, and mow at a slower speed for better results.