Toro Wheel Horse 520-HE 73521 Setup Instructions
![Toro Wheel Horse 520-HE 73521 Tractor manual cover](/images/QWGTpsBgvooblBeKTkufGSfr/thumbs/thumb175x175.webp)
To change the oil, first warm up the engine to ensure the oil flows out smoothly. Turn off the engine and remove the key. Place an oil pan under the oil drain plug. Remove the plug and allow the oil to drain completely. Replace the drain plug and refill with the recommended oil type and capacity as specified in the manual. Check for leaks and ensure the oil level is correct using the dipstick.
The Toro Wheel Horse 520-HE 73521 Tractor is designed to run on unleaded gasoline with an octane rating of 87 or higher. Avoid using ethanol blends above E10 to prevent engine damage.
If the tractor won't start, check the battery connections for corrosion and ensure they are tight. Verify that the fuel tank has gasoline and that the fuel line is not clogged. Inspect the spark plug for wear or damage and replace it if necessary. If the problem persists, consult the technical manual for further diagnostics.
Regular maintenance includes checking and changing the oil, replacing the air filter, inspecting the spark plug, cleaning the mower deck, sharpening the blades, and checking tire pressure. Refer to the owner's manual for a detailed maintenance schedule.
To adjust the cutting height, locate the height adjustment lever on the side of the tractor. Move the lever to the desired position, which corresponds to the cutting height indicated on the scale. Ensure the lever is locked into place before operation.
If the transmission is not engaging, check the transmission fluid level and top it off if necessary. Inspect the drive belt for wear or damage and replace it if needed. Ensure all linkage and controls are properly adjusted and not obstructed. If issues persist, consult a professional technician.
For off-season storage, clean the tractor thoroughly and ensure it is dry. Add a fuel stabilizer to the gas tank and run the engine for a few minutes to distribute it through the system. Disconnect the battery and store it in a cool, dry place. Cover the tractor to protect it from dust and moisture.
To improve fuel efficiency, regularly maintain the engine by changing the oil, replacing air filters, and ensuring the spark plug is in good condition. Keep the blades sharp to reduce engine strain, and avoid mowing when the grass is wet or excessively tall.
Check that the mower deck is level by measuring the blade height at each corner and adjusting as needed. Inspect the blades for wear or damage and replace them if necessary. Ensure that the tire pressure is equal on all four tires to maintain an even cut.
Begin by disconnecting the spark plug to prevent accidental starting. Remove the mower deck according to the manual instructions. Locate the drive belt and release the tension. Remove the old belt and replace it with a new one, ensuring it is routed correctly. Reinstall the deck and reconnect the spark plug.