ASP FS61AR 4-stroke Engine for Nitro RC Planes

A = ABC  Engine
SII = Rear Needle Valve Engine
FS = Four Stroke Engine
R = RINGED ENGINES

FEATURES:
Dual ball bearing-supported crankshaft
Choke system for easy starting
CNC precision machining
Steel cylinder liner and ringed piston for long life
Rear-mounted updraft two needle valve carburetor

REQUIRES: Glow plug: Four-stroke glow plug only.

Fuel: Recommended by manufacturer, 10% nitromethane with 20% castor oil for break-in, no more than
15% nitromethane and no less than 16% castor oil after break-in.
Propeller: 11x8, 11x9, 11x10, 12x6, 12x7, 12x8,12x10, 13x5, 13x6 and 13x7.

SPECS: Bore: 24.8mm
Stroke: 20.6mm
Displacement: .61 cu in,
Practical rpm: 2,000-12,000
Weight: 15.5oz
Prop Nut Size: 1/14-28
Length: 91.5mm (3.60") (from backplate to front of drive washer)
Length: 120mm (4-11/16") (from backplate to front of crankshaft)
Height: 121mm (4.76") (from bottom of engine to top of head)
Width: 52mm (2-1/32") (mounting hole centers-side to side)
Width: 25mm (15/16") (mounting hole centers-front to rear)
Width: 42.6mm (1.68") (crankcase width neglecting mounting flanges)