Simplicity 1690312 Parts Manual
![Simplicity 1690312 Tractor manual cover](/images/VIyeBFMDUGcpyzwcAGGpsQyu/thumbs/thumb175x175.webp)
To change the oil, first warm up the engine to ensure the oil flows smoothly. Turn off the engine and disconnect the spark plug for safety. Place a container under the oil drain valve, remove the cap, and let the oil drain completely. Replace the cap, add new oil as specified in the manual, and check the level with the dipstick.
Use unleaded gasoline with a minimum octane rating of 87. Avoid using gasoline with more than 10% ethanol, as it can damage the engine.
If the tractor fails to start, check the battery connections for corrosion, ensure the fuel valve is open, and the fuel level is adequate. Verify the spark plug is clean and functional. If the problem persists, consult the user manual for further troubleshooting steps.
Clean the tractor thoroughly, remove any debris, and dry completely. Stabilize the fuel, change the oil, and check all fluid levels. Disconnect the battery or use a battery maintainer. Store the tractor in a dry, sheltered area to protect it from the elements.
Sharpen the blades at least once per mowing season or more frequently if you notice uneven cutting or tearing of the grass. Always balance the blades after sharpening to avoid vibration and potential damage.
Excessive vibration can be caused by unbalanced or damaged blades, loose components, or engine issues. Check the blades for damage and ensure they are balanced. Tighten any loose parts and consult the manual for engine troubleshooting if necessary.
To replace the air filter, locate the air filter housing on the engine. Remove the cover, take out the old filter, and clean any debris from the housing. Insert the new filter, ensuring it fits snugly, and replace the cover securely.
After every 50 hours of use, check and change the engine oil, inspect and clean the air filter, and lubricate all grease fittings. Also, check the tire pressure and tighten any loose bolts or screws.
Adjust the cutting height by using the lever located near the driver's seat. Move the lever to the desired position to raise or lower the cutting deck. Ensure the tractor is on a level surface for an even adjustment.
Check the transmission fluid level and top it off if necessary. Inspect for leaks and ensure the drive belt is properly tensioned and not worn out. If the issue persists, consult the manual or seek professional service.