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GX390 - Manufacturer: Honda

The Next Generation of GX Engines.

The GX390 is all new for 2010, 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.

  • Pressure washers
  • Commercial lawn and garden equipment
  • Tillers / cultivators
  • Generators
  • Forestry equipment
  • Construction / industrial equipment
  • Agricultural equipment
  • Small vehicles
  • Water pumps
MSRP:$850.00
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Engine

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)

Pto Shaft Options

E typeTapered shaft
H typeReduction type PTO
L typeReduction type PTO
P typeThreaded type (SAE)
Q typeStraight shaft
R typeReduction type PTO
V typeTapered shaft

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
  • 3-Year Limited Warranty

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

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