Toro Wheel Horse 500 Series 41-20OE03 Operator's Manual

To change the oil, first ensure the engine is off and cool. Locate the oil drain plug under the tractor, remove it, and allow the old oil to drain completely. Replace the drain plug, then remove the oil filter. Install a new oil filter and refill the engine with the recommended oil type and quantity.
Check the battery connections for corrosion and ensure they are tight. Verify that there is enough fuel and that the fuel valve is open. Inspect the spark plug for wear and replace if necessary. If the problem persists, consider checking the air filter or consulting a professional.
Routine maintenance should be performed every 50 hours of operation or at the start of each mowing season. This includes checking the oil level, inspecting belts, cleaning the air filter, and sharpening the blades.
Use unleaded gasoline with an octane rating of 87 or higher. Avoid using gasoline with more than 10% ethanol content to prevent engine damage.
Ensure the tire pressure is even on all sides. Check that the mower deck is level and the blades are sharp. Inspect the blades for damage and replace if necessary. Make sure there is no buildup of grass clippings under the deck.
Clean the tractor thoroughly and perform any necessary maintenance. Add fuel stabilizer to the gas tank and run the engine for a few minutes. 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 hardware, or debris lodged in the deck. Check and balance the blades, tighten any loose bolts, and clear out any debris.
The cutting height can be adjusted using the lever located on the side of the tractor. Move the lever to the desired position to raise or lower the mower deck. Always adjust the height on a flat surface and with the engine off.
Signs include squealing noises, uneven cutting, and visible wear or cracks on the belts. Inspect the belts regularly and replace them if they show signs of damage or wear.
Maintain a clean air filter, ensure the tires are properly inflated, and perform regular engine tune-ups. Avoid mowing when the grass is wet and keep the blades sharp for optimal performance.