It ensures air and fuel work together to start a combustion engine. Checking the CarburetorĪ carburetor is a component in gasoline engines. Clean it or replace it depending on the type of filter it is. If your air filter is clogged, it will literally suffocate the engine when you rev the throttle.ĭepending on your model, it’s usually just a matter of turning a plastic knob or unscrewing a single screw to remove the air filter cover and gain access. When the fuel has passed through the fuel filter, it enters the carburetor where it’s mixed with air. It doesn’t last forever like people think it does. And if you do mix your own, make sure your two-stroke oil hasn’t gone bad. It’s worth checking this and cleaning the filter (or replacing it since they are so inexpensive). A fuel filter can get clogged with impurities to a point that it allows a small amount of fuel through (enough for starting and even idling) but won’t let it through at a rate sufficient to rev up. When a weed eater starts okay but dies when throttled, it often indicates that there is restricted fuel flow. If you have been using a less-optimal fuel, it’s worth checking your fuel filter. It’s ethanol-free, has a high octane rating, and has a much longer shelf life than a homemade fuel mix.Ĭommercial pre-mixed fuel also has the correct levels of fuel stabilizers and assures a precise gas-to-oil ratio for optimal small engine performance. Your best bet is to opt for a pre-mixed fuel like Husqvarna XP (link to Amazon). Ethanol can really mess up a small engine. Most manufacturers allow for up to 10% ethanol but it’s not worth the risk. Know this: Bad gas will sometimes allow a weed eater to start but once you try to rev the throttle, it dies.Īs a rule, I strongly recommend using ethanol-free gas in your weed eater. It’s also possible that the type or mixture of fuel you are using has caused an issue. Blame it on the heat!Īnd those primer bulbs tend to dry-rot and crack over time so make sure it’s not sucking in air when you depress it. Sometimes we forget to do this in the midst of working. If the tank has plenty of fuel, be sure the primer bulb is filling properly before you start the engine. But we’ve all had that moment of frustration just to realize the tank had nothing but fumes. Let’s deal with the obvious first and get it out of the way.įirst, make sure you have enough gas in the tank. When it comes to gas-powered weed eaters, the problem often lies with the quality and flow of fuel.
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