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Honda Power Equipment
Newly designed for better noise levels and emissions

GX390 Honda Engine

Featuring more power, quieter performance, lower fuel consumption, and lower emissions. With new features and better performance, the new GX engines establish themselves yet again as the best engines in the business.

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    Shipping & Delivery

    Estimated Delivery

    Orders are usually delivered within 3-4 working days from purchase date.
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    About Honda Power Equipment
    Honda Power Equipment Mfg., Inc. (HPE) has boosted its general purpose engine production to 1,000,000 engines per year (a significant increase from the 300,000 engines per year produced three years ago) for use by Honda and other OEMs.
    SKU: 224-ENG-GX390 Categories: Engines, Mid Range, Power Products
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    OVERVIEW

    Quality and Performance Come Standard

    The GX390 offers all of the power, comfort, and efficiency you’ve come to expect from Honda – along with several new features to further enhance your experience. It’s no wonder why the GX Series is the go-to when performance counts.

    FEATURES

    Fuel Efficient, High Output Operation

    • Digital CDI ignition system with variable timing
    • Increased compression ratio
    • Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficency
    • OHV design for increased efficiency and optimal power transfer

    Smooth Performance

    • Precision engineered components result in lower vibration
    • Ball bearing supported crankshaft for greater stability
    • Heavy duty balancer shaft
    • Improved piston design

    Exceptionally Quiet

    • Large capacity, multi-chamber exhaust system
    • Improved camshaft and muffler reduce overall engine noise by up to 5 dB
    • Forged steel crankshaft and rigid crankcase
    • Helical cut gears
    • Sophisticated air intake system

    Proven Reliability

    • Oil Alert
    • Cast iron cylinder sleeve
    • High quality materials, fit, and finish
    • Dual element air cleaner
    • Fuel Valve

    Easy to Use and Maintain

    • Simple throttle control
    • Large fuel tanks
    • Large automotive type fuel cap
    • Dual oil drains and fill
    • Easy, convenient, heavy duty control box
    • Easily accessible spark plug

    Easy Starting

    • Heavy duty recoil starter
    • Automatic mechanical de-compression system
    • Variable ignition timing

    Emissions Compliant

    • CARB and EPA certified
    • No catalyst necessary

    Available Options

    • Low profile versions
    • Gear reduction options
    • Electic start
    • Spark arrester available
    • Charge and lamp coils with multiple output options available
    • Cyclone Air Cleaner available
    SPECIFICATIONS

    Specs

    Engine TypeAir-cooled 4-stroke OHV
    Bore x Stroke88 X 64 mm
    Displacement389 cm3
    Net Power Output*11.7 HP (8.7 kW) @ 3,600 rpm
    Net Torque19.5 lb-ft (26.4 Nm) @ 2,500 rpm
    PTO Shaft RotationCounterclockwise (from PTO shaft side)
    Compression Ratio8.2:1
    Lamp/Charge coil options25W, 50W / 1A, 3A, 10A, 18A
    CarburetorButterfly Float Type
    Ignition SystemDigital CDI with variable timing
    Starting SystemRecoil/electric
    Lubrication SystemSplash
    Governor SystemCentrifugal Mass Type
    Air cleanerDual element
    Oil Capacity1.16 US qt (1.1 L)
    Fuel Tank Capacity6.4 U.S. qts (6.1 liters)
    FuelUnleaded 86 octane or higher
    Dry Weight69 lb (31.5 kg)
    Dimensions
    Length (min)16.0″ (407 mm)
    Width (min)19.1″ (485 mm)
    Height (min)17.7″ (449 mm)
    APPLICATIONS
    • Agricultural equipment
    • Commercial lawn and garden equipment
    • Construction/industrial equipment
    • Forestry equipment
    • Generators
    • Pressure washers
    • Small vehicles
    • Tillers/cultivators
    • Water pumps
    OWNERS MANUAL(S)
    • GCAA-2042139-9999999
    Brand

    Honda Power Equipment

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        • Business Divisions
          • Marine Engines
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        • Online Shop
          • Marine Engines
          • Power Products
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          • Construction Equipment

          Portable ( 2 - 20 hp) (6)

          6 products

          Mid Range (25 - 100 hp) (5)

          5 products

          High Power (115 - 350 hp) (9)

          9 products

          Engines (9)

          9 products

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          31 products

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          7 products

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          1 product

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          1 product

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          2 products

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