This is the O.S. Max 2.00 FS-200S Surpass Four Stroke Engine. FEATURES: Ideal for scale and sport aircraft 80N carburetor can be reversed 180° for easy adjustment Multi-directional F-6010 silencer for mild 4-stroke sound Two year limited warranty INCLUDES: O.S. Max 2.00 FS-200S Four Stroke Engine with type "F" glow plug, F-6010 muffler, header pipe, instruction manual REQUIRES: Fuel: 5-30% nitro with at least 18% lubricant content Propeller: 15x12-14, 16x12-14, 17x10-13, 18x6-10, 17x12-13, 18x8-12, 20x8 (break-in engine with prop intended for use on model) Electric Starter: High torque Glow starter and field equipment SPECS: Displacement: 1.98 cu in (32.4cc) Bore: 1.50" (38.0mm) Stroke: 1.13" (28.6mm) Practical RPM: 1,800 - 10,000 Output: 2.9 PS, 2.86 HP/9000 RPM Weight: 32.8oz (930g) without muffler 34.2oz (970g) with muffler Crankshaft Thread Size: 5/16-24 Break-in Carburetor Settings; Needle Valve: 3-4 turns open from fully closed Idle Mixture: Slightly rich (45-60°) from highest RPM setting Mixture Control Valve: 3 turns in from counterclockwise Distance Between Mounting Holes Same Side: 0.98" (25mm) Distance Between Mounting Holes Opposite Side: 2.3" (58mm) Height from Crankcase Bottom to Rocker Cover: 5.7" (144mm) Height from Crankshaft Center to Rocker Cover: 4.7" (119mm) Height from Crankshaft Center to Muffler Center: 3.2" (82mm) Distance from Crankcase Center to Prop Hub: 0.27" (77mm) Width at Mounting Tabs: 2.6" (67mm) Width of Crankcase Below Mounting Tabs: 1.9" (48mm) Width of Cylinder Head: 2.2" (58mm) Distance from Carburetor to end of Crankshaft: 6.8" (172mm) Distance from Carburetor to Crankcase Center: 2.3" (58.5mm) Distance from Carburetor to Prop Hub: 5.3" (135.5mm) jxs 4/19/07 ir/jxs