SPECIFICATIONSStock Number: OSMG1951Displacement: 0.499 cu in (8.17 cc)Bore: 0.866 in (22 mm)Stroke: 0.847 in (21.5 mm)Practical rpm: 2,000-20,000Output:1.9 hp @ 17,000 rpmWeight: 14.3 oz (406 g)Includes: 60LH carburetor, #8 glow plugRequires: muffler, drive hub