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Poulan was founded as Poulan Saw Co. in 1946 by chainsaw pioneer Claude Poulan in Shreveport, Louisiana.Purchased in late 1950s or early '60 by the Beaird Company, also of Shreveport, it was known as Beaird-Poulan.
Chainsaw engines are traditionally either a two-stroke single-cylinder gasoline (petrol) internal combustion engine (usually with a cylinder volume of 30 to 120 cm 3) or an electric motor driven by a battery or electric power cord. In a petrol chainsaw, fuel is generally supplied to the engine by a carburetor at the intake.
General characteristics Bore: 92mm Stroke: 69mm Displacement: 1835cc Dry weight: 63 kg Components Valvetrain: Single overhead exhaust valve, single overhead inlet valve per cylinder Fuel system: Bing carburetor with altitude compensation Fuel type: min 95 RON Cooling system: Air-cooled Performance Power output: 68hp at 3200 rpm Compression ratio: 8.5:1 See also Sauer Engines References ^ a b ...
Two-barrel downdraft Holley 2280 carburetor Cross-sectional schematic. A carburetor (also spelled carburettor or carburetter) [1] [2] [3] is a device used by a gasoline internal combustion engine to control and mix air and fuel entering the engine. [4]
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The engine is based on the Volkswagen air-cooled engine, extensively modified for aircraft use and all the parts are custom made. [1] They are certified according to CS-22 subpart H [2] [3] and can therefore be used in motorgliders and light aircraft that are certified as CS-VLA [4] and CS-LSA [5]
Operating cycle for a four-stroke engine Operation of a flat-twin engine Operation of a straight-four engine. Although some components within the engine (such as the connecting rods) have complex motions, all motions can be separated into reciprocating and rotating components, which assists in the analysis of imbalances.
The engines usually have a carburetor and require a manual pull crank to start them, although an electric starter is offered on some models, particularly large riding and commercial mowers. Some mowers have a throttle control on the handlebar with which the operator can adjust the engine speed. Other mowers have a fixed, pre-set engine speed.