Engine - GX390T2 QN

With the GX390, you’re looking at one of the best engines in the business. More power. Quieter performance. Lower fuel consumption. Lower emissions. Better features. Exceptional performance. Honda’s GX series lives up to the legend, and then some.

- Honda OHV commercial grade engine
- 9.6kW (13HP)/3600rpm and 389  cm³ Displacement
- Fuel efficiency
- 1 year warranty

Common Applications

  • Pressure washers
  • Commercial lawn and garden equipment
  • Tractor*
  • Generators*
  • Construction / industrial equipment*
  • Agricultural equipment
  • Water pumps

Specifications

Engine type 4-stroke, overhead valve single cylinder, inclined by 25°
Displacement (cm3) 389 cm³
Bore and stroke 88.0 × 64.0 mm
Compression ratio 8.2 : 1
Gross power (SAE J1995) 9.6kW (13HP)/3600rpm
Net Power (SAE J1349)* 8.7kW (11.7 HP)/3600 min-1 rpm
Max. Net Torque (SAE J1349)* 26.5 N.m (2.7 kgf.m, 19.5 lbf.ft)/2500 min-1 rpm
Fuel tank capacity 6.1 Liters Gasoline Oktan 86 or higher
Ignition system CDI Digital
Spark plug BPR6ES (NGK) / W20EPR-U (DENSO)
Starting system Recoil starter
Air cleaner Dual element type
Oil Capacity 1.1 Liters SAE 10W-30 (API SE or Later)
Dimensions 407 x 459 x 449
Dry Weight 31 kg

Data Specifications are subject to change at any time without prior notice

* The power rating of the engine indicated in this document is the net power output tested on a production engine for the engine model and measured in accordance with SAE J1349 at 4,500, 4,000 or 3,600 rpm (Engine Net Power) and at 3,000 or 2,500 rpm (Engine Max. Net Torque).
Mass production engines may vary from this value . Actual power output for the engine to be mounted on the manufacture of the final machine will vary depending on many factors , including the operating speed of the engine in application , environmental conditions , maintenance and other variables .