Simplicity 990389 W Parts Manual
![Simplicity 990389 W Tractor manual cover](/images/EdqoJbpfyNlIhTsYXjXnVRLx/thumbs/thumb175x175.webp)
To perform a basic oil change, first run the tractor for a few minutes to warm up the oil. Then, turn off the engine and locate the oil drain plug. Place a container underneath and remove the plug to drain the oil. Replace the plug and refill with the recommended oil type and amount.
Check the battery connections to ensure they are clean and tight. Verify that there is fuel in the tank and that the fuel valve is open. Inspect the spark plug for wear or damage and replace if necessary.
The air filter should be checked and cleaned every 25 hours of operation and replaced every 100 hours or annually, whichever comes first, to ensure optimal performance.
Regularly check the mower deck for debris and clean it after each use. Sharpen the blades every 25 hours and inspect the belts for wear, replacing them as necessary.
Ensure the tires are properly inflated, perform regular maintenance such as oil changes and air filter replacements, and operate the tractor at recommended speeds to improve fuel efficiency.
Check if the mower deck is level and adjust if necessary. Inspect the blades for sharpness and balance, and replace or sharpen them if needed.
Start by checking the battery and fuses for faults. Inspect wires and connections for damage or corrosion, and ensure the ignition switch is functioning properly.
Use unleaded gasoline with a minimum octane rating of 87. Avoid fuels with more than 10% ethanol content as they can damage the engine.
Locate the cutting height adjustment lever or knob, which is typically on the side of the tractor or near the driver's seat. Adjust to the desired height setting and ensure it is secured in place.
Clean the tractor thoroughly and remove any debris. Change the oil and filter, and add a fuel stabilizer to the fuel tank. Store in a dry, sheltered area and disconnect the battery if storing for an extended period.