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GF30 4-Stroke Gasoline w/F6040 Muffler

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GF30 4-Stroke Gasoline w/F6040 Muffler

O.S. Engines OSMG0798 Engine
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  • GF30 4-Stroke Gasoline w/F6040 Muffler

    This is the O.S. Engines GF30 4-Stroke Gasoline Engine.


    Ideal for models designed for 1.20-1.50 glow engines or 20cc gasoline
    Same firewall mounting system as the O.S. GT22
    Rear mounted O.S. designed carb with PD-08 fuel pump
    Lightweight IG-07 igniton module accepts up to 2S LiPo power
    Positive Crankcase Ventilation (PCV) helps keep model and environment
    cleaner by eliminating blow-by gas and oil waste
    Two year limited warranty through Hobby Services beginning at date of


    GF30 4-Stroke Gasoline Engine, Spark Plug, Muffler, Ignition
    Module and Instructions


    2-cycle oil, see SPECS
    Ignition Battery: 4.8-6.0V NiCd or NiMH, 6.6V LiFe or 7.4V LiPo pack
    LiPo battery requires voltage regulator
    Propeller: 16x10-12, 17x8-10, 18x6W-8
    Mounting standoffs, length depends on aircraft
    Gasoline safe fuel tubing and fuel filter


    Carburetor Adjustments;
    Needle Valve: Slowly open throttle fully after engine is started.
    Close needle valve in 30-45° increments. When RPMs start to
    decrease, close needle valve 60-90° further. Open slowly at 15°
    per second until maximum RPM is obtained, then open 60-90°
    further from max RPM point
    Mixture Control Valve: Preset at nearly best position. Do not adjust
    until break-in is completed
    Start engine & open throttle fully to warm up engine. Set idle
    around 2000RPM from throttle trim on transmitter. Move throttle
    from idle to fully open several times & measure idling RPM with
    tach. If idling is unstable & RPM decreases gradually, the
    mixture control valve is set rich. If RPM increases at idling
    or engine doesn't respond quickly, the mixture is too lean.
    Stop engine & turn mixture control valve 30° clockwise if
    mixture is too rich, or 30° counterclockwise if too lean.
    Repeat above procedure until idling RPM becomes stable.
    For final main needle adjustment, set idling RPM by transmitter
    depending on prop size and aircraft model. Move throttle stick to
    full throttle quickly and then to full throttle slowly,
    adjusting needle 15° counterclockwise if too lean, or 15°
    clockwise if too rich.

    Displacement: 1.827 cu in (29.94 cc)
    Bore: 1.496" (38mm)
    Stroke: 1.039" (26.4mm)
    Practical RPM Range: 1,800-9,000
    Output: 2.8s/2.76hp @ 9000RPM
    Weight: Engine, 34.9oz (990g)
    Muffler, 4.0oz (113g)
    Ignition Module, 3.35oz (95g)
    Gasoline/Oil Mixture: 30:1 - 50:1
    25:1 fuel/oil mixture if brand of oil states 50:1 mix
    Crankshaft Size: UNF5/16-24
    Length from Pump to Drive Hub: 5.7" (145.6mm)
    Length from Center of Crankcase to Drive Hub: 3" (76.5mm)
    Length from drive hub to end of Crankshaft: 1.6" (40mm)
    Length from Carburetor to end of Crankshaft: 7.3" (185.6mm)
    Height from Mounting Tab to Rocker Cover: 4.7" (119.6mm)
    Height bottom of Crankcase/top of Rocker Cover: 5.7" (146mm)
    Distance/Mounting Hole Centers Same Side: 0.98" (25mm)
    Distance/Mounting Hole Centers Opposite Side: 2.36" (60mm)

  • O.S. Engines GF30 4-Stroke Gasoline w/F6040 Muffler Parts List (0 items)

  • O.S. Engines GF30 4-Stroke Gasoline w/F6040 Muffler Hop-Ups & Optional Accessories (0 items)

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