O.S. Surpass series of 4-stroke model engines have 30% larger intake valves than the FS series. Ringed piston. Rear-mounted updraft carburetor. Helix gear-driven camshaft. Ball bearing-supported camshaft and crankshaft. Covered under 2-YEAR WARRANTY. This product includes one assembled FS-120 Surpass w/carb and no pump. One #F glow plug. One exhaust header. One exhaust muffler. One choke valve extension. One set of instructions, poster, and decals. (Wrenches, Choke Valve Extension, and Mounting Template Are No Longer Included per O.S.)

Fuel: 5%-15% nitromethane with 18% lubricant. Synthetic, castor, or a synthetic/castor blend may be used. NOTE: Certain four-cycle fuels cannot be used due to low oil content. However, SOME four-cycle fuels such as the Wildcat 4-Cycle 15% may be used because it has 18% oil content. When choosing fuels for this engine, the modeler must be sure to select a fuel with at least a 18% lubricant content.
Starting and Field Equipment.
Propeller (see SPECS)