O.S. Engine 81FS-a 4-Stroke Engine  [OSMG0981]

Mounts easily in the same room due to the fact FS-70SII with no modifications.
a plastic O-ring on the muffler's multi-positional manifold helps prevent oil leakage.
The specifically designed lubrication system eliminates the need for crankcase ventilation.
The 60RA carburetor has a venturi that decreases the possibility of gas leaking out onto the cowl, while additionally creating more good air/fuel movement.

SPECS

• Inventory Number: OSMG0981
• Displacement: 0.809 cu in (13.26 cc)
• Bore: 1.091 in (27.7 mm)
• Stroke: 0.866 in (22.0 mm)
• Body weight w/muffler: 20.11 oz (570 g)
• Practical rpm range: 2,200-10,000
• Output: 1.3 hp @ 11,000 rpm
• Includes: 60RA carburetor, F-5030 muffler