Pump feature adds responsiveness to the FS-91 Surpass New regulating style pump, normally only found in 1.20 class engines, delivers better response and reliability Rear ball bearing is rubber-sealed on both sides and greased internally to help inhibit bearing corrosion The crankshaft, cam shaft and piston ring are all plated to further resist corrosion Features a reversible carb which allows the needle valve to face either the left or right side of the engine Black anodized rocker cover A large-volume muffler offers better noise [...]

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