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A string trimmer, also known by the portmanteau strimmer and the trademarks Weedwacker, Weed Eater and Whipper Snipper, [1] [a] is a garden power tool for cutting grass, small weeds, and groundcover. It uses a whirling monofilament line instead of a blade, which protrudes from a rotating spindle at the end of a long shaft topped by a gasoline ...
In the 1990s, Flymo's focus as a company changed from just making lawnmowers, to also making garden tools including blowers and strimmers. The Gardenvac leaf blower and vacuum cleaner was introduced. 2013. Flymo announced their Robotic lawnmower line, the EasiLife 200/350/500, the model numbers being the number of square metres of lawn they ...
Four-stroke cycle used in gasoline/petrol engines: intake (1), compression (2), power (3), and exhaust (4). The right blue side is the intake port and the left brown side is the exhaust port. The cylinder wall is a thin sleeve surrounding the piston head which creates a space for the combustion of fuel and the genesis of mechanical energy.
The M4+2 engine has a four-stroke piston and a two-stroke piston. The shaft of the four-stroke piston rotates twice as fast as the shaft of the two-stroke piston, and the two-stroke part always runs at half speed. This ensures that both parts work optimally regarding fuel consumption at all times.
The first person to build a working four-stroke engine, a stationary engine using a coal gas-air mixture for fuel (a gas engine), was German engineer Nicolaus Otto. [4] This is why the four-stroke principle today is commonly known as the Otto cycle and four-stroke engines using spark plugs often are called Otto engines.
"jointly the two companies produce a vast range of two-stroke and four-stroke petrol engines and four-stroke diesel engines from 1/3 to 16 b.h.p. These are the engines which power many of Britain's two-stroke motor cycles, scooters and three wheelers, and the great majority of the motor mowers, cultivators, concrete mixers, generating sets ...
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