The Best Commercial-Grade Gas String Trimmers

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This powerful, commercial-grade string trimmer was designed for heavy-duty use. The experts at Popular Mechanics say that this model uses a 27 cc two-stroke engine that uses a gasoline and oil mixture, which means it may create more pollution and is harder to start than a four-stroke engine. FS 55 RC-E has plenty of cutting power and uses a thicker nylon string to cut through the toughest weeds and brush. The bump feed system replaces the worn or broken nylon string with fresh string with a simple bump on a hard surface. These systems can damage the head, but they are very convenient.

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This model uses a curved shaft that many smaller string trimmers use to make the device more comfortable for the user, but many professionals prefer a straight shaft for extra power. The Echo SRM 210i uses a straight shaft and an easy starting system, says the Galt Home Buying Guide. One of the reasons this model is ideal for commercial use is its 17-inch cutting swath, which makes quick work of large acreage. It only features a one-year warranty for commercial use, and it may not provide as much power as other gas-powered models.

The four-stroke engine that powers the HHT25SLTAT ensures a smoother operation with less vibration and less air pollution. According to ConsumerSearch, this model provides plenty of power. The engine can be tilted in practically any direction without damage, and the debris shield is wide and provides plenty of protection from flying plant material or rocks. Its main drawback is its heavy weight. When fueled, it can weigh as much as 14 lbs, which can quickly become taxing during a day`s worth of landscaping.

Although it uses a two-stroke engine, this commercial-quality string trimmer started easily and operated smoothly during testing, according to Popular Mechanics. The 28 cc engine provides serious power to the cutting head. The specially designed debris shield prevents weeds or grass from clogging the string, which often halts the trimming process with other string trimmers. The main downside to this model is its high price tag. If you own a landscaping company, the price may be worth the extra quality and cutting power.