81FS-a O.S. Engine 4-Stroke Pumped Engine

Now available with a PD-08 fuel pump for improved performance!

Scale modelers have enthusiastically embraced FS-a engines because they virtually
eliminate oil mess while delivering excellent power. Now you can get the 81FS-a
equipped with a fuel pump for even more consistent performance.

Mounts easily in the same space as an FS-70II with no modifications
Fuel is delivered consistently to the engine at all times, regardless of the
plane’s attitude, for more reliable performance.
Ideal for aerobatics and other situations that demand high power.
Feature the ingenious recirculation system that re-lubricates parts instead
of venting the oil out into the cowl.

SPECIFICATIONS

• Stock Number: OSMG0982
• Displacement: 0.809 ci (13.26 cc)
• Bore: 1.091 in (27.7 mm)
• Stroke: 0.866 in (22.0 mm)
• Practical RPM: 2,200-10,000 rpm
• Power Output: 1.28 hp @ 10,000 rpm
• Engine Weight: 20.11 oz (570 g)
• Muffler Weight: 1.9 oz (54g)
• Includes: 61R carburetor, F-5030 muffler, PD-08 pump