GX390 HA2 389cc Horizontal Engine (Red)

  • COMMON APPLICATIONS
  • Common applications include:pressure washers, commercial lawn and garden equipment, tillers/cultivators, generators, forestry equipment, construction/industrial equipment, agricultural equipment, small vehicles, and water pumps.
  • 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
  • Reduced mechanical noise due to piston design
  • 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
  • Spark arrester available
  • Charge and lamp coils with multiple output options available
  • Cyclone Air Cleaner available
Regular Price $937.20 Sale Price $865.00
  • Honda
  • 664570
Usually ships in 3-5 business days. We will contact you if ETA is longer.
Free shipping to lower 48 states.
Cannot ship to California.
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Air CleanerDual Element
Bore X Stroke88 x 64 mm
CarburetorButterfly Float Type
ColorRed
Compression Ratio8.2:1
Crankshaft TypeReduction Type PTO
Dimensions16.0" x 19.1" x 17.7"
Displacement389cc
Dry Weight69 lb(31.5 kg)
Engine TypeAir-cooled 4-stroke OHV
FuelUnleaded 86 octane or higher
Fuel Tank Capacity6.4 qt(6.1 l)
Governor SystemCentrifugal Mass Type
Ignition SystemDigital CDI with variable ignition timing
Lubrication SystemSplash
Model NameGX390UT2-HA2
Net Power Output*11.7 HP (8.7 kW) @ 3,600 rpm
Net Torque19.5 lb-ft (26.4 Nm) @ 2,500 rpm
Oil Capacity1.16 qt(1.1 l)
Pto Shaft RotationCounterclockwise
Starting SystemRecoil
Honda654520
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