O.S.Max FS Series FS-81 Alpha Type 4-Stroke Displacement .809 cu in (13.26cc) Bore 1.09" (27.7mm) Stroke .866" (22mm) RPM Range 2,000-12,000 Output (HP/rpm) 1.3/11,000 Weight (engine only) 19.6 oz. (556g) Crankshaft Thread 1/4"-28 Propeller Range 13x7 - 14x7 Included Muffler/Header, #F Glow Plug Decal Sheet, Instructions

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2 Years Limited Warranty