Instruction Manuals:	Manual 1 (1.4 MB)
Tower Catalog Page:	196
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        This is a FT-300 Twin-Cylinder 4-Stroke Engine from O.S. Max.
 This Engine is a Flat (Opposed) Twin-Cylinder Engine, called the Gemini-300".
   It is Scale-Like in Appearance when Installed in a Piper Cub or Citabria.

FEATURES: 3-Crankshaft Ball Bearings
          2-Camshaft Ball Bearings
          Twin Opposed Cylinders
          Ringed Piston
          Geared Camshaft (geared timing)
          Two-year warranty

INCLUDES: One Assembled FT-300 Twin 4-Stroke Engine
          One Instruction Manual w/Decals, Poster
          One Dual Glow Plug Extension Cable
          One Locking Prop Nut Assembly (installed)
          One Motor Mount (OSMG2808) (installed)
          Two #F Glow Plugs (installed)
          One Mounting Hardware Bag
          One Valve Adjustment Tool Set (OSMG6334)
          One Choke Valve Extension (Rod)

SPECS:    Construction: Aluminum and Aluminum alloys
          Displacement: 24.38cc (x2) or 1.49 cu in (x2)
          Bore:         33.6mm (1.32")
          Stroke:       27.5mm (1.08")
          Power Output: 4.0 BHP at 7,000 RPM
          Weight:       1828g (64.5oz)
          Practical RPM Range: 1,800 - 9,000 RPM
          Crankshaft Threading: 3/8-24
          Length:       148mm (5.83") from firewall to front of drive washer
          Width:        240mm (9.45")
          Height:        90mm (3.54")
          Suggested Props: 18x10,18x11,18x12,18x13,18x4,20x8,20x9,20x10,
                                                                  20x11, 22x8
          Needle Settings: High Speed: 1.5 turns out from fully closed
                           Mixture Control (low speed): 2 turns out from fully
                                       closed

REQUIRES: Fuel with 5%-15% Nitromethane and AT LEAST 16% lubricant content
            (Use fuels blended for 4-stroke engines, most of the 5%-15% fuels
             we carry meet these requirements)
          Prop and Starting Equipment

COMMENTS: No longer includes needle valve extension, knob, and hook,
            3x32mm propeller slippage screws, motor mount template, or spare
            Woodruff key.

                                                                          ir/jl
                                                                updt lmm 4/6/09



– If you need more information, use these O.S. resources –

Click Here: Manufacturer's Product Web Page
E-mail: enginesupport@hobbico.com
Web Site: http://www.osengines.com/
Phone: 217-398-8970


 
Postal Address:
O.S.
3002 N. APOLLO DRIVE, SUITE #1
CHAMPAIGN, IL 61822  








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