Simplicity 990155 VC Parts Manual

Ensure the tractor is on a level surface. Check that the parking brake is engaged, and the PTO switch is off. Insert the key and turn it to the 'Start' position while pressing the brake pedal. Release once the engine starts.
Check the battery connections for corrosion and ensure they are tight. Verify that the fuel tank is not empty and the fuel valve is open. Inspect the spark plug for wear or damage. Ensure that all safety switches are engaged.
Change the oil after the first 5 hours of use, and then every 50 hours of operation or annually, whichever comes first. Use SAE 30 oil for best performance.
Use unleaded gasoline with an octane rating of 87 or higher. Avoid using fuel with more than 10% ethanol content to prevent engine damage.
Ensure the blades are sharp and properly balanced. Adjust the cutting height to match the type of grass. Mow when grass is dry to avoid clumping. Clean the deck regularly to prevent buildup.
Routinely check the transmission fluid levels and top up as necessary with the recommended fluid. Inspect the drive belt for wear and replace if needed. Keep the transmission clean to ensure proper cooling.
Check the tire pressure to ensure all tires are inflated equally. Inspect the mower deck to confirm it is level. Examine the blades for sharpness and wear, and replace if necessary.
Clean the tractor thoroughly and remove any debris. Stabilize the fuel by adding a fuel stabilizer to the tank. Change the oil and oil filter, and check the air filter. Store the tractor in a dry, sheltered area.
Keep the battery terminals clean and free from corrosion. Charge the battery fully before storing the tractor for extended periods. Disconnect the battery if storing for a long time to prevent discharge.
Check for debris or obstructions under the deck. Ensure the blades are properly balanced and securely fastened. Inspect the spindle assembly for wear or damage and replace any faulty components.