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It began trading under the Echo brand name in 1978. [4] Echo brand logo. In its founding year, the company launched a revolutionary engine-powered manual crop duster. Until the 1960s, the company concentrated on the manufacture of power dusters, mist blowers and other pest control machinery.
A 32 cc (32 cm 3; 2.0 cu in) engine can swing a 2.75 mm (0.108 in) line and often has metal-blade accessories. Most trimmers use single-cylinder engines (particularly two-stroke) and require gasoline mixed with oil. Due to pollution laws four stroke engines are becoming more popular
The Twin Cylinder Engine – This engine was introduced in 1977 as a means of competing with Briggs & Stratton's rivals, particularly Japanese firms like Honda who were cutting into traditional Briggs & Stratton markets by producing lawn mower engines (and later, complete lawn mowers). These first models were rated 16 hp (11.9 kW) and displaced ...
Both are relatively quiet, typically producing less than 75 decibels, while a gasoline lawn mower can be 95 decibels or more. [21] Corded electric mowers are limited in range by their trailing power cord, which may limit their use with lawns extending outward more than 100–150 feet (30–45 m) from the nearest available power outlet.
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McCulloch Motors Corporation is an American manufacturer of chainsaws and other outdoor power tools.The company was founded in Milwaukee, Wisconsin, in 1943 by Robert Paxton McCulloch as a manufacturer of small two-stroke gasoline engines and introduced its first chainsaw in 1948, the Model 5-49.
Although carburetor technology in automobiles reached a very high degree of sophistication and precision, from the mid-1980s it lost out on cost and flexibility to fuel injection. Simple forms of carburetor remain in widespread use in small engines such as lawn mowers and more sophisticated forms are still used in small motorcycles.
Straight-five engines typically use a firing order of 1-2-4-5-3, in order to minimise the primary vibration from the rocking couple. Straight-six engines typically use a firing order of 1-5-3-6-2-4, which results in perfect primary and secondary balance. However, a firing order of 1-2-4-6-5-3 is common on medium-speed marine engines.
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