John Deere Select Series X350 Operator's Manual

To change the oil, first run the engine for a few minutes to warm it up. Turn off the engine and remove the key. Place a drain pan under the engine and remove the oil drain plug. Allow the old oil to completely drain out. Replace the drain plug and fill the engine with new oil as specified in the operator's manual.
The John Deere X350 is designed to run on unleaded gasoline with an octane rating of 87 or higher. Avoid using gasohol with more than 10% ethanol content.
It is recommended to sharpen the mower blades after every 25 hours of use. However, this can vary based on the type of grass and terrain. Regular inspection can help determine the need for sharpening.
If your tractor won't start, check the battery connections to ensure they are clean and tight. Verify that the fuel level is adequate and that the fuel is fresh. Check the spark plug for wear or damage and replace if necessary. Also, ensure that the PTO is disengaged and the parking brake is set.
To adjust the cutting height, locate the height adjustment lever on the fender deck. Move the lever to the desired cutting height position. The height can be adjusted between 1 to 4 inches in increments of 0.25 inches.
The recommended tire pressure for the John Deere X350 is 10 psi for the front tires and 8 psi for the rear tires. Always check the tire pressure when the tires are cold.
To clean the air filter, first remove the air filter cover. Take out the air filter and inspect it. If it's only slightly dirty, you can tap it gently to remove dirt. For a more thorough cleaning, wash it with warm soapy water, rinse, and let it dry completely. If the filter is excessively dirty or damaged, replace it.
Before storing your X350 for the winter, perform an oil change and clean or replace the air filter. Add a fuel stabilizer to the fuel tank and run the engine for a few minutes to circulate it through the system. Clean the mower deck and remove any grass clippings. Finally, disconnect the battery and store it in a cool, dry place.
To check the battery, ensure the terminals are clean and free of corrosion. Use a voltmeter to check the voltage; a fully charged battery should read around 12.6 volts. Clean the terminals with a wire brush and apply a thin coat of petroleum jelly to prevent corrosion. Charge the battery if it's below the recommended voltage.
If the mower deck is not engaging, check the PTO switch to ensure it is functioning correctly. Inspect the mower deck belt for damage or improper tension. Make sure the battery is fully charged and the safety interlock system is operating properly. If troubleshooting does not resolve the issue, consult the operator's manual or contact a professional technician.