The DeWalt DCST920P1 is part of the String trimmer
test program at Consumer Reports. In our lab tests, String trimmer
models like the DCST920P1 are rated on multiple criteria, such as those listed below.
Trimming: Indicates how quickly and neatly models cut grass.
Edging: How quickly and neatly models trimmed a vertical line along a walkway.
Tall grass and weeds: Indicates cutting power in tall grass and weeds.
WeightWeight is rounded to the nearest tenth of a pound and doesn't include fuel, which can add 1/2 pound.
Engine sizeEngine cubic centimeters (cc), motor amperes (amp), and motor electrical voltage (volt) are from the manufacturer.
ShaftThe shaft transfers power from the engine or motor to the lines that do the cutting. Models with straight shafts offer longer reach, while those with curved shafts tend to be lighter and easier to handle.
Four-cycle engineUses straight gasoline and doesn't require an oil/gasoline mixture, as do the two-cycle engines found in most trimmers.
Dual lineTrimmers with two lines cut more quickly and can handle heavier growth than those with just one line, since they do twice the work with each pass.
Line diameterThe thickness of the cutting line, measured in hundredths of an inch--for example, .085.
ClutchA centrifugal clutch disengages the rotation of the cutting head when you're starting or idling the engine. This makes it easier to start and, while you're doing so, keeps the string from the ground, where it will kick up grass and dirt.
Rotating headLets you swivel the cutting head 90 degrees for easier edging, which is done vertically.
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