Simplicity 1691357 SunStar Parts Manual
![Simplicity 1691357 SunStar Tractor manual cover](/images/sjLdrKMubYcbeskmAexaqqqy/thumbs/thumb175x175.webp)
The recommended oil type for the Simplicity 1691357 SunStar Tractor is SAE 30 oil for temperatures above 32°F and SAE 5W-30 for cold weather operation below 32°F.
It is recommended to change the oil every 50 hours of operation or at least once per mowing season.
Common causes for the tractor not starting include a dead battery, dirty spark plugs, clogged fuel filter, or an empty fuel tank. Check each of these components to diagnose the issue.
To store the tractor, clean it thoroughly, change the oil, remove the battery, and add a fuel stabilizer to the fuel tank. Store it in a dry, covered area.
First, check the PTO switch and ensure it is engaged. Inspect the drive belt for wear or damage, and ensure the connections to the PTO clutch are secure.
Ensure the blades are sharp, the deck is level, and the tire pressure is correct. Also, mow at an appropriate speed and height for your lawn conditions.
To replace the spark plugs, disconnect the spark plug wire, remove the old spark plug using a socket wrench, and install the new spark plug. Ensure it is properly gapped according to the manufacturer's specifications.
The cutting height can be adjusted using the lever located near the driver's seat. Refer to the manual for specific height settings appropriate for your mowing needs.
Regular maintenance checks include inspecting the air filter, checking the tire pressure, lubricating moving parts, and ensuring all bolts and screws are tight.
Excessive vibration can be caused by unbalanced blades, loose parts, or damaged belts. Inspect these components and replace or tighten them as needed.