Seal
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1 Cevap 0 Puan |
How do you replace the chain brake in a Stihl Pro Saw? |
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1 Cevap 2 Puan |
saw starts runs wot will not idle down and run |
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2 Cevap 0 Puan |
Why is the engine heat and stop |
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1 Cevap 0 Puan |
The spark plug wire is broke I need to replace it for that |
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Background
A chainsaw is an electric or gasoline-powered mechanical saw mainly used to cut wood. Chainsaws include a set of teeth attached to a chain that spins around a guide bar.
Possibly the first chainsaw-like tool was created by Bernhard Heine, a German orthopaedist, around 1830. This tool, called the osteotome, was used for cutting bone. It included a chain with small cutting teeth that rotated around a guiding blade by manually turning a handle. Through the 19th century, the chainsaw was mainly used as a surgical instrument. In 1905, Samuel J. Bens patented the first “endless chain saw” to fell the giant redwood trees in San Francisco, California. In 1918, the first portable chainsaw was patented by James Shand, a Canadian millwright. Andreas Stihl patented an electric chainsaw in 1926 and a gasoline-powered chainsaw in 1929.
Identification
Modern chainsaws include an engine, drive mechanism, guide bar, cutting chain, and tensioning mechanism. Chainsaw engines are generally two-stroke gasoline internal combustion engines or electric motors powered by batteries or electric power cords. Chainsaw drive mechanisms are typically a centrifugal clutch and sprocket mechanism. Chainsaw guide bars are elongated bars made of alloy steel with a rounded end. The cutting chain is similar to bicycle chains but also includes cutting teeth that can vary in size and shape. Many chainsaws also include safety features including chain brakes, chain catchers, and rear handle guards.
