Honda GX390T2 QHP1 Engine

The power rating of the engine indicated in this document is the net power output tested on the production engine for the engine model and measured in accordance with SAE J1349 at 3,600 rpm (net power) and at 2,500 rpm (max net torque). Mass production engines may vary from its value. Actual power output for the engine installed in the final machine will vary depending on numerous factors, including the operating speed of the engine in application, environmental conditions, maintenance, and other variables.

Specifications:

Model GX390T2 (QHP1)
Type 4 Stroke, OHV, Single cylinder, inclined 25°
Displacement 389 cm³ (23.7 cu-in)

Net power (SAE J1349) * 1 8.7 kW (11.7 HP) @ 3600 rpm
Maximum net torque (SAE J1349) 26.5 N-m (2.7 kgf-m, 19.5 lbf-ft) @ 2500 rpm
Compression Ratio 8.2 ± 0.2 : 1
Fuel consumption (at continuos rated power) *1 3.5 Liters (0.92 US gal, 0.77 lmp gal)/h
Ignition System CDI (Capacitor Discharge Ignition) type magneto ignition
Lubrication System Forced splash
Oil Capacity 1.1 Liter (1.16 US qt, 0.97 lmp qt)
Starting System Recoil starter
Air Cleaner Dual element
Governor Mechanical centrifugal
Fuel Used Gasoline with a pump octane rating of 86 or higher
Fuel Tank Capacity 6.1 Liters (1.61 US gal, 1.34 lmp gal)
Reduction System X
Weight 31.7 kg (69.9 lbs)
PTO Size 25.375 – 25.4 mm (0.9990 – 1.0 in)
Bore x stroke 88.0 x 64.0 mm (3.5 x 2.5 in)

Deflector, Bolt & Washer Deflector

Remarks: The power rating of the engine indicated in this document is the net power output tested on the production engine for the engine model and measured in accordance with SAE J1349 at 3,600 rpm (net power) and at 2,500 rpm (max net torque). Mass production engines may vary from its value. Actual power output for the engine installed in the final machine will vary depending on numerous factors, including the operating speed of the engine in application, environmental conditions, maintenance, and other variables.