Murray 38711x66C Parts Manual
![Murray 38711x66C Tractor manual cover](/images/KuhAFqgcFMufBoZPggTHopiS/thumbs/thumb175x175.webp)
To change the oil, first ensure the tractor is on a level surface. Run the engine for a few minutes to warm the oil, then turn it off. Locate the oil drain plug under the engine, place an oil pan beneath it, and remove the plug. Allow the oil to drain completely, replace the plug, and refill with the recommended oil type and amount.
Check the battery connections for corrosion or looseness. Ensure the fuel tank is filled and the fuel valve is open. Inspect the spark plug for wear or damage and replace if necessary. Verify that the ignition switch is in the correct position. If problems persist, consult the manual or a professional technician.
Blade sharpening frequency depends on usage. For regular use, it's advisable to sharpen the blades once a season or after approximately 25 hours of mowing. Inspect the blades regularly and sharpen them if they appear dull or damaged to ensure efficient mowing and lawn health.
Use unleaded gasoline with an octane rating of 87 or higher. Avoid using fuel with more than 10% ethanol content as it can damage the engine components. For optimal performance, fresh fuel should be used, especially if the tractor is stored for long periods.
Remove the air filter cover and take out the air filter. If it’s a paper filter, tap it gently to remove debris or replace it if it’s too dirty. For foam filters, wash with soap and water, let it dry, and apply a few drops of engine oil before reinstalling.
Refer to the owner’s manual for the specific tire pressure recommendations. Typically, front tires should be inflated to around 14 psi and rear tires to about 10 psi. Maintaining correct tire pressure ensures optimal traction and even mowing.
Uneven cutting can be due to dull blades, tire pressure discrepancies, or a misaligned deck. Check and sharpen the blades, ensure all tires are equally inflated, and adjust the mower deck height settings. If the problem persists, inspect for bent blades or deck components.
Clean the tractor thoroughly and remove any grass clippings. Drain the fuel system or add a fuel stabilizer. Check and change the oil if needed. Disconnect the battery and store it in a cool, dry place. Cover the tractor to protect it from dust and moisture.
Excessive vibration can be caused by unbalanced or damaged blades, loose engine bolts, or worn belts. Inspect the blades for damage or imbalance, tighten any loose parts, and replace worn belts. If vibration continues, consult a professional technician.
Regularly inspect the battery terminals for corrosion and clean them if necessary. Ensure the battery is securely mounted. Check the electrolyte levels if applicable and top up with distilled water. Keep the battery charged, especially during off-season storage.