OS FS-56II 4ST GLOW AIRPLANE ENGINE (40NA) W/F-4040 SILENCER

Specifications
Carb Type: O.S. 40NA rotary
HP: 1.0PS, 0.99 HP @ 10,000 RPM
Muffler Type: 2-piece aluminum
Muffler Weight: 1.48 oz (42 g)
Prop Range: 12x6-8 - 13x6-7
Stroke: 0.81" (20.6mm)
Crankshaft Threads: UNF1/4-28
Engine (Only) Weight: 13.9 oz (394g) w/o muffler, 14.8 oz (419g)
Recommended Fuel: 10%-20% four cycle blend nitromethane w/18% synthetic lubricant
Width: 1.7" (44mm) between mounting hole centers
Total Weight: 16.3 oz (461 g)
Bore: 0.945" (24mm)
Type: 4-stroke glow powered aircraft engine
Displacement: 0.569 cu in (9.32 cc)
Height: 3.3" (84mm) bottom of mounting tab to top of rocker cover
Crankshaft Type: Threaded
Length: 5.2" (131.3mm) from carb to front of drive hub
RPM Range: 2,400 - 13,000
Cylinders: Single
Plug Type: F