FS-91 O.S. Engine Surpass II With Pump

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