Simplicity 1691385 SunStar Parts Manual
![Simplicity 1691385 SunStar Tractor manual cover](/images/ddPZBBMoGMxLdQiqmRzGdioH/thumbs/thumb175x175.webp)
To change the oil, first run the engine for a few minutes to warm it up. Turn off the engine and remove the oil drain plug to drain the old oil into a pan. Replace the drain plug, remove the oil filter, and install a new one. Finally, refill with the recommended type and amount of oil.
If the tractor won't start, check the battery for charge, ensure the fuel tank has fuel, and inspect the spark plug for wear or damage. Also, make sure the safety switches are engaged properly.
Routine maintenance should be performed every 50 hours of operation or at the start of each season, whichever comes first. This includes changing the oil, inspecting belts, and cleaning or replacing the air filter.
The Simplicity 1691385 SunStar Tractor is designed to run on unleaded gasoline with a minimum octane rating of 87. Avoid using ethanol blends higher than E10.
Check if the mower deck is level and adjust if necessary. Inspect the blades for damage and sharpness, and replace or sharpen them as needed. Ensure that the tires are inflated to the correct pressure.
Overheating can be caused by blocked air intake screens, a dirty radiator, or low coolant levels. Clean the air intake and radiator, and check the coolant level, topping up if necessary.
To extend the battery life, ensure it is fully charged before storage, clean the terminals regularly, and store it in a cool, dry place when not in use. Consider using a battery maintainer during off-seasons.
First, turn off the tractor and disconnect the battery. Remove the mower deck and locate the broken belt. Install the new belt following the belt routing diagram in the manual, then reattach the mower deck and reconnect the battery.
Clean the tractor thoroughly, change the oil, and remove the battery. Add fuel stabilizer to the gas tank and run the engine for a few minutes. Store the tractor in a dry, covered area.
Ensure the hydraulic fluid is at the correct level and free of contamination. Check for leaks in the hydraulic lines and inspect the filter for clogs. Also, make sure that the hydraulic pump is functioning properly.