![]() Fixed head string trimmers either require the user to manually replace the string or feature small blades instead of strings.Īutomatic feeds are obviously the most convenient, but fixed heads have fewer moving parts, which makes them potentially more durable.For these devices to work properly, the head must be spinning when you bump it on a solid object like a stone or log. Bump feed heads have buttons under them that release string when bumped on an object.Automatic feed weed eater heads, as the name suggests, release more string as needed without input from the user.When you replace your weed eater head, you get to choose the line-feed method. How the weed eater head feeds out more string depends on the model. Line-Feed DesignĪs the string on a weed eater spins and bumps into stones, stumps, landscaping blocks, and other objects, it breaks and needs replenishing. This is far less of a concern with torquey gasoline-powered models. Heavy-duty replacement heads put a lot of stress on the weed eater’s motor and may shorten the weed eater’s lifespan. If you’re able to put a screw-on head on your electric or cordless trimmer, it’s important to choose a light-duty model. Many electric or battery-powered weed eaters use proprietary heads that snap onto the shaft, while weed eater heads for gasoline-powered models screw onto the shaft, in most cases. There isn’t always a difference between weed eater heads for electric and gas-powered models, but when there are, it’s usually a deal-breaker. ![]() If you’re using a powerful gasoline-powered model, you might consider trading up to a larger diameter string, as it’s less likely to break while trimming. Many universal heads can handle string thicknesses between 0.065 inch and 0.095 inch, and heavier-duty models might tolerate 0.105-inch string or thicker. Many universal heads come with adapters that attach to nearly any weed eater.īeyond the size of the head itself, the size of the weed eater string is a consideration, too. Unless you purchase directly from the weed eater’s manufacturer, you’re going to need to find a universal head. Be sure to give this section a thorough look to choose the best head for your weed whacker. This section explains each key consideration and provides a bit of background on what goes into replacing a weed eater head. Photo: What to Consider When Choosing the Best Weed Eater Headīefore setting out to purchase the best weed eater head, you’ll need to consider a few factors.
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