How to Start a Gas Weed Eater

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Things You'll Need

  • 2-cycle engine oil

  • Unleaded gas

  • Safety glasses


Always wear safety glasses, work gloves and heavy boots when operating a Weed Eater.

To pre-mix a larger quantity of gas for your Weed Eater, combine 1 gallon of unleaded gas with 3.2 ounces of 2-stroke oil. This will provide a 40:1 ratio of gas to oil.


The trimmer head will rotate while you are starting the engine, so avoid coming in contact with it.

Weed Eater is a name synonymous with efficient gas lawn trimmers. Following the success of the Weed Eater, many manufacturers of lawn and garden machinery developed their own product line of trimmers. Weed Eater trimmers are especially popular because they are lightweight, affordable and versatile. Most gas models can trim, mow and edge sidewalks, driveways, fences and flower beds. In order to keep your yard pristine and your lawn beautiful, you will need to know how to start your Weed Eater safely.

Step 1

Put on a pair of safety glasses. Remove the fuel cap from the Weed Eater and set it aside. Fill the fuel tank with unleaded gasoline that has been mixed with quality 2-stroke oil in a 40:1 ratio. Replace the fuel cap.

Step 2

Move the Weed Eater to a safe place and lay it flat on the ground. Depress the fuel bulb located beneath the carburetor approximately six times to prime the engine. Press it slowly so that fuel has adequate time to traverse the fuel line.

Step 3

Slide the handlebar-mounted engine "On/Stop" switch to the "On" position. Slide the choke lever beneath the fuel tank to the "Full" position.

Step 4

Depress the "Throttle Lock" lever located beside the engine "On/Stop" switch. Keeping the lever depressed, squeeze the throttle trigger. Release the throttle lock. This sequence holds the trigger in the depressed position, which aids in starting the Weed Eater.

Step 5

Roll the Weed Eater so that it is resting on the engine and the trimmer head shield only. This will allow the spinning trimmer head to avoid contact with the ground. Brace the Weed Eater by holding it to the ground with one hand. Using your other hand, pull the starter rope quickly until the engine begins to run. Do not pull the rope more than a dozen times. If it fails to start by then, squeeze the throttle trigger and continue to pull until the engine starts.

Step 6

Allow the Weed Eater to warm up for about 15 seconds, then slide the choke lever to the "Off" position. Let the trimmer run for another minute without touching the throttle lever. After the Weed Eater has warmed up, squeeze the throttle trigger once to disengage the throttle lock. The trimmer is now operational.


Steven Douglas

Residing near the Central Florida beaches, Steven Douglas has written extensively on resolving small-business issues since 1990 in publications such as ForexFactory, Forex-Tsd, FxStreet and FxFisherman. After earning a master's degree in administration from the University of Maryland, his primary focus has been on international currency trade and how it can be effectively utilized by small businesses across the United States.