The 2004 Polaris Sportsman 700 was the world’s first ATV equipped with an Electronic Fuel Injection (EFI) system, which provided altitude compensation and better fuel economy. The quad featured dual driveline modes, composite utility racks, and a keyed ignition.
Engine – It has a four-stroke, liquid-cooled 2004 Polaris Sportsman 700 twin-cylinder engine. It has a bore-stroke ratio of 80 mm x 68 mm. The engine displacement is 683 cubic centimeters (41.68 cubic inches) delivered by a 34-mm Mikuni BST carburetor, and its compression ratio is 9.78:1. It has a pressurized wet sump type lubrication system. Fuel tank capacity is 4.25 US gallons/16 liters of regular gasoline with a minimum Octane rating of 87/89 (oxygenated). The 2004.5 model had a Bosch Electronic Fuel Injection system with multi-port semi-sequential injection, which is proven more efficient than throttle body injection designs. This EFI system comes with several benefits, such as smooth, responsive power, enhanced starting in all environmental conditions, automatic adjustment to altitude and temperature changes, and gas mileage improvement by at least 15%.
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