- The Featherlite cools its engine via an influx of outside air. This air comes in through the open fins of the cylinder and through the starter, which allows the engine to stay cool under hot operating conditions. The oil, which helps to lubricate the engine, needs to stay below a certain temperature before it no longer lubricates. Two-cycle oil, designed for air-cooled engines, allows the engine to keep working at high speeds because it won't thin out at these higher temperatures. So only use two-cycle air-cooled engine oil.
- Regular unleaded gasoline will work just fine in the Featherlite. The Weed Eater brand recommends using at least a grade of 87 octane. However, the higher grade of gasoline used, the higher the engine performance. Up to 10 percent of this fuel can be blended with additives such as alcohol or ethanol. Exceeding this amount will degrade plastic parts in the carburetor. Never use diesel fuel or any fuel that has been sitting for more than a month.
- Featherlite trimmers need a mixture of 40-to-1 gasoline to oil. This precise mixture will allow all the moving parts to stay lubricated and cool enough to continue operating. The mixture will require a 3.2 oz. bottle of air-cooled two-cycle engine oil for every 1 gallon of gasoline. Don't lean this formula or richen it, as Weed Eater has tested and designed their engines to operate with this mixture. Changing the mixture will damage and even ruin the engine.
- Pour in all of the engine oil before dumping in the gasoline. If the gasoline is poured in first, the oil won't blend and mix smoothly into the fuel. When it's sitting at the bottom, the gas will help break up the oil. Close the container, and shake it for about a minute after the fuel is in, which will also ensure that all of the oil and gas is mixed. Dump any mixed fuel after 30 days as it will separate after this time.
Proper Oil
Proper Gasoline
Proper Mixture
Mixing Instructions
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