'Specifications: Displacement: 0.617 cu in (10.11 cc) Bore: 0.98 in (25.0 mm) Stroke: 0.81 in (20.6 mm) Practical RPM: 2400 Äì 11,000 Power Output: 1.12 hp/11,000 rpm Engine Weight: 15.6 oz (442 g) Muffler Weight: 1.55 oz (44 g) Includes: F glow plugF-4050 Jet Stream Silencer &