Weed Eater Fuel to Oil Concentration

Weed Eater Gasoline

• Weed Eater two-stroke engines run at incredibly high rates of speed, often greater than 9,000 rpm. For the engines to handle this speed and the heat that gets invariably produced, they need a high-quality gasoline. Weed Eater recommends using a regular unleaded fuel with an octane rating of at least 87, though higher octanes will provide better performance. Never use gasoline with other additives, such as ethanol or gasohol, if the gas contains more than 10 percent of these additives. This will damage the sensitive parts in the carburetor.

Weed Eater Oil

• Just as with the gasoline, Weed Eater engines need a high-quality oil to maintain the correct operating speeds and temperatures. Without this high-quality oil, the piston and crankcase won't receive proper lubrication and may get damaged. Weed Eater recommends using its own brand of two-stroke engine oil. However, any high-quality two-stroke oil intended for use in air-cooled engines will work fine. Never use any oil --- including automotive oil or reclaimed oil --- other than two-stroke, air-cooled engine oil.

Fuel/Oil Concentration

• To keep the engine properly lubricated and maintain the right temperatures, the gasoline and two-stroke oil need to be mixed at the proper concentration, or ratio. This ratio will ensure that oil reaches throughout the entire crankcase and piston. Weed Eater recommends blending the gasoline and two-stroke oil at a 40:1 gas to oil ratio. This ratio shouldn't be adjusted for any reason, such as if you're experiencing poor performance. Always mix the fuel to this ratio to prevent engine damage.

Mixing Procedures

• For the oil and gas to mix thoroughly, the fuel needs proper mixing; otherwise, the oil, which is heavier, will settle at the bottom of the fuel container, and the engine will not receive lubrication. Pour the two-cycle oil into a clean fuel container, and then mix the gasoline on top. When the gas is topped off, close the container and shake up the fuel mixture. Always shake the fuel container before each refueling stop as well. Remember, mix only the amount of fuel you can use in 30 days, as it will go bad after this time.