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Honda GX390

  • Honda GX390
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Overview

Quality and performance come standard.

The GX390 features more power, quieter performance, lower fuel consumption, and lower emissions than the previous version. With new features and better performance, the new GX engines establish themselves yet again as one of the best engines in the business.

COMMON  APPLICTIONS

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

Why Buy a Honda Engine?
Find out why Honda engines have a reputation for exceptional performance, quality and reliability.

Experience counts

Experience born on racetracks and roadways around the globe. Experience that keeps us on the cutting edge of engine performance technology. We have a well-earned reputation for our engine quality and performance. When you choose a Honda engine, or a product powered by Honda, you know what you're getting. An engine you can count on, now and in the future.

Performance

Excellent fuel efficiency. High power output. Quiet performance. Easy to use. What's our secret? Exceptional engineering and technology. Honda engines are truly built like no other.

Renowned reliability and quality
Honda sets the standard for reliable, hard-working engines. Our engines are built with high-quality components designed for optimum performance in the harshest environments. But don't just take our word for it. Honda stands behind our engines a three-year commercial warranty on all GX engines, 100cc and larger.

Or ask a Honda engine owner. Next time you visit a rental centre, see a landscape truck, or pass by a construction site, you'll probably see a Honda GX engine-powered piece of equipment. Stop and ask them what they think of the Honda engine. Chances are they'll tell you they wouldn't use anything else.

Legendary easy starting
Honda engines are renowned for being easy to start, day after day, year after year. From our unique automatic mechanical decompression system, to heavy duty recoil ropes, to more advanced variable ignition timing, our engines are designed with quick, easy starts in mind.

Environmental focus
Honda engines are 100% compliant with Canadian engineering and environmental standards. In fact, most Honda engines meet the strictest world standards, including EPA standards and the very strict CARB tier 3 Standards.

Canada-wide parts and service support
Honda understands the importance of getting you back to work quickly. Honda has a vast nationwide support network of over 1400 Registered Service Dealers, OEMs, HEDs and Honda Dealers. From parts to service, Honda servicing dealers are there to assist you when you need it. Find a servicing dealer.

The superior choice for manufacturers
Hundreds of OEMs trust Honda to power their products for instant credibility.
Specifications
Model
GX390
Category Name
Engines
Year
2022
Sale Type
New
Manufacturer
Honda
Engine Size
779 cm3 (48 CID)
Fuel
Unleaded 86 octane or higher
Carburetor
Butterfly float type
Dry Weight
31.5 kg (69 lbs)
Net Torque
19.5 lb-ft (26.4 Nm) @ 2,500 rpm
Air Cleaner
Dual element
Engine Type
Air-cooled 4-stroke OHV
Width (min)
485 mm (19.1")
Displacement
389 cm3
Height (min)
449 mm (17.7")
Length (min)
407 mm (16.0")
Oil Capacity
2.0 litres (2.1 US qts.)
Bore X Stroke
88 mm x 64 mm
Ignition System
Digital CDI with variable ignition timing
Starting System
Recoil/electric
Compression Ratio
8.2:1
Net Power Output*
11.7 HP (8.7 kW) @ 3,600 rpm
Lubrication System
Splash
PTO Shaft Rotation
Counterclockwise (from PTO shaft side)
Lamp/Charge Coil Options
25W, 50W / 1A, 3A, 10A, 18A
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 efficiency
  • 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 QUIT

  • 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 ABILITY

  • 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
  • Electric start
  • Spark arrester available
  • Charge and lamp coils with multiple output options available
  • Cyclone Air Cleaner available