Got a small project that needs power? This 37.7cc, 4-stroke gasoline engine might be the perfect little workhorse. It's a single-cylinder, air-cooled motor that puts out up to 1000 watts (1 kilowatt) of power and can spin at 6500 RPM. It starts with a simple hand-pull recoil starter. It runs on a mix of 4-stroke engine oil and regular #92 or #95 gasoline (not straight gas – remember, it's a 4-stroke, so you mix the oil in the crankcase, not the fuel). With a 0.65-liter fuel tank, it can run for a decent while between refills. It's compact (about 7.5x6.7x9.8 inches) and relatively lightweight at under 11 pounds, so it's easy to mount on various things. People use these for all sorts of stuff: powering go-karts, small lawn mowers, garden tillers, log splitters, generators, ground drilling machines, you name it. It has a cast iron cylinder liner for durability, a carburetor designed for decent fuel efficiency, and a silencer to keep the noise down a bit. A great, versatile base for any DIY power equipment build. Just remember, this is for outdoor use only due to carbon monoxide.
