The Green Works 21142 is part of the string trimmer
test program at Consumer Reports. In our lab tests, string trimmer
models like the 21142 are rated on multiple criteria, such as those listed below.
Indicates how quickly and neatly models cut grass.
How quickly and neatly models trimmed a vertical line along a walkway.
Tall grass & weeds:
Indicates cutting power in tall grass and weeds.
Features & Specs - Green Works 21142
Weight (lbs.) Weight is rounded to the nearest tenth of a pound and doesn't include fuel, which can add 1/2 pound.
Engine size Engine cubic centimeters (cc), motor amperes (amp), and motor electrical voltage (volt) are from the manufacturer.
Shaft The 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 engine Uses straight gasoline and doesn't require an oil/gasoline mixture, as do the two-cycle engines found in most trimmers.
Dual line Trimmers 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.