HONDA GX390 - Manual (Page 18)

ENGLISH
Specifications Air Index
Descriptive Term Applicable to Emissions Durability Period
GX270 (PTO shaft type S)
GX390 (PTO shaft type S)
18
355 430 422 mm
(14.0 16.9 16.6 in)
25.0 kg (55.1 lbs)
4-stroke, overhead valve, single cylinder
The bar graph is intended to provide you, our customer, the ability
to compare the emissions performance of available engines. The
lower the Air Index, the less pollution.
The durability description is intended to provide you with
information relating to the engine’s emission durability period.
The descriptive term indicates the useful life period for the engine’s
emission control system. See your
Emission Control System
Warranty for additional information.
300 hours [0 80 cm (0 80 cc) inclusive]
500 hours [greater than 80 cm (80 cc)]
1,000 hours [225 cm (225 cc) and greater]
Moderate
Intermediate
Extended
50 hours [0 80 cm (0 80 cc) inclusive]
125 hours [greater than 80 cm (80 cc)]
125 hours [0
80 cm (0 80 cc) inclusive]
250 hours [greater than 80 cm (80 cc)]
An Air Index Information label is applied to engines certified to an
emission durability time period in accordance with the
requirements of the California Air Resources Board.
270 cm (16.5 cu-in)
[77.0 58.0 mm (3.0 2.3 in)]
6.0 kW (8.2 PS, 8.0 bhp) at 3,600 rpm
17.7 N·m (1.80 kgf·m, 13.1 lbf·ft)
at 2,500 rpm
Length Width
Height
Dry mass [weight]
Engine type
Displacement
[Bore
Stroke]
Net power
Max. Net torque
Engine oil capacity
Fuel tank capacity
Cooling system
Ignition system
PTO shaft rotation 1.1 (1.2 US qt , 1.0 Imp qt)
5.3 (1.40 US gal , 1.17 Imp gal)
Forced air
Transistor magneto
Counterclockwise
Length Width
Height
Dry mass [weight]
Engine type
Displacement
[Bore
Stroke]
Net power
Max. Net torque
Engine oil capacity
Fuel tank capacity
Cooling system
Ignition system
PTO shaft rotation
380 450 447 mm
(15.0 17.7 17.6 in)
31.5 kg (69.4 lbs)
4-stroke, overhead valve, single cylinder
389 cm (23.7 cu-in)
[88.0 64.0 mm (3.5 2.5 in)]
8.2 kW (11.1 PS, 11.0 bhp) at 3,600 rpm
25.1 N·m (2.56 kgf·m, 18.5 lbf·ft)
at 2,500 rpm
1.1 (1.2 US qt , 1.0 Imp qt)
6.1 (1.61 US gal , 1.34 Imp gal)
Forced air
Transistor magneto
Counterclockwise
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 3,600
rpm (Net Power) and at 2,500 rpm (Max. Net Torque). Mass
production engines may vary from this 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.
(Models certified for sale in California)
(in accordance with SAE J1349 )
(in accordance with SAE J1349 )
(in accordance with SAE J1349 )
(in accordance with SAE J1349 )
07/10/25 14:43:55 32Z5F600_018