FS40S Ringed 4-Stroke w/Muffler

This is a FS-40 Surpass Four-Stroke Model Aircraft Glow Engine.

FEATURES: Rear-mounted updraft carburetor
30% larger intake valves than the original FS series
Helix gear-driven camshaft
Ringed piston
Ball bearing-supported camshaft and crankshaft
Two year warranty

INCLUDES: One Assembled engine w/Carb and #F Plug
One Muffler w/Manifold
One Set of Instructions O.S. Poster and Decal.
(Wrenches Choke Valve Extension and Mounting Template Are No
Longer Included per O.S.)

REQUIRES: Fuel: 5%-15% nitromethane with 18% lubricant. Synthetic castor or
a castor/synthetic blend may be used.
NOTE: Certain four-cycle fuels cannot be used due to low oil content.
However SOME four-cycle fuels such as the Wildcat 4-Cycle 15%
(CATP9109) may be used due to its 18% oil content.
When choosing fuels for this engine the modeler must be sure to
select a fuel with at least a 18% lubricant content.
Starting and Field Equipment.
Propeller (see SPECS)

SPECS: Bore: 21.2mm (.835")
Stoke: 18.4mm (.724")
Power Output: .65 BHP at 12 000 RPM
Weight- w/o muffler: 12.5 oz (354g)
with muffler: 13.3 oz (377g)
Practical RPM Range: 2 200 - 12 000 RPM
Crankshaft Thread Size: 1/4-28
Valve Clearance: Between .04mm and .1mm (.0015" and .004")
Measured between the valve tip and rocker arm.
Length: 77.5mm(3.05") from backplate to the front of the drive washer
Width: 32.5mm (1.28") width of engine neglecting the mounting flanges
42mm (1.65") side-to-side mounting holes on-center
Height: 98mm (3.85")
Suggested Prop(s): 10X7.5 11X6 12X5 12X6 (2-blade) 9X7 (3-blade)
Construction: Aluminum and aluminum alloys