Simplicity 1690850 5216 Parts Manual

Ensure the tractor is on a flat surface. Insert the key into the ignition switch and turn it to the "Start" position. Make sure the parking brake is engaged and the PTO is off before starting.
Use SAE 30 oil for temperatures above 32°F (0°C) and SAE 10W-30 for temperatures below 32°F (0°C). Always check the oil level before each use.
Change the oil after the first 5 hours of use, then every 50 hours of operation or once per season, whichever comes first.
Check the battery connections and ensure they are clean and tight. Verify that there is enough fuel in the tank. Also, make sure the safety features, such as the seat switch and parking brake, are engaged.
Regularly clean the mower deck to prevent grass buildup. Sharpen the blades at least once per season and check the belt for wear. Adjust the deck height as needed to ensure even cutting.
The recommended tire pressure for the front tires is 12 psi and for the rear tires is 10 psi. Always check tire pressure when the tires are cold.
Ensure that the mower deck is level. Check that the blades are sharp and not damaged. Also, inspect the tire pressure, as uneven pressure can affect the cutting height.
Regular maintenance should include checking and changing the oil, inspecting the air filter, checking tire pressure, inspecting the belts, and ensuring all bolts and fasteners are tight.
Locate the air filter cover on the side of the engine. Remove the cover and take out the old air filter. Insert the new filter and replace the cover securely.
Clean the tractor thoroughly, change the oil, and remove any fuel from the tank or add a fuel stabilizer. Store the tractor in a dry, covered area to protect it from the elements.