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 reduction for milder sound
SPECIFICATIONS
- Stock Number: OSMG0890
- Displacement: 0.912 cu in (14.95 cc)
- Bore: 1.091 in (27.7 mm)
- Stroke: 0.976 in (24.8 mm)
- Practical rpm: 2,000-12,000
- Output: 1.6 hp @ 11,000 rpm
- Weight w/muffler & manifold: 23.9 oz. (678 g)
- Weight w/o muffler & manifold: 22.2 oz. (630 g)
- Recommended Props: Stunt: 11×10, 11×11, 12×9.5, 12×10, 12×11; Scale: 13.5×8,
14×7, 15×6, 16×6, 12×8 3-blade, 12.5×7 3-blade





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