The engine has an 18- amp charging system.
Honda GX390 OHV Engine — 389cc, Electric, 18-Amp Charge System, Horizontal, Black, Model# GX390UT2XQNR2-BLK
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$1129.99
- Not for sale in CA
- Provides higher power output, improved fuel efficiency, and smoother engine performance.
- Enhances combustion efficiency, improves power transfer, and reduces fuel consumption—ideal for heavy?duty industrial use.
- Ball?bearing supported crankshaft and heavy?duty balancer shaft deliver smoother operation and longer engine life.
- Automatically protects the engine from low?oil damage, increasing reliability and reducing maintenance costs.
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See All Honda Engines Horizontal Engines
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$1999.99
Specifications
Specifications
Honda GX390 OHV Engine — 389cc, Electric, 18-Amp Charge System, Horizontal, Black, Model# GX390UT2XQNR2-BLK
Honda GX Series OHV V-Twin Engine — 688cc, Horizontal, 1in. Shaft, Model# GX630RHQZE
Honda Engines, V-TWIN HORIZONTAL 630CC RQAF1 Engine Displacement 688 cc, Engine Type GX Series OHV V-twin Commercial-duty, Shaft Diameter 1 in, Model# GX630RHXQAF1
Honda GX Series OHV V-Twin Horizontal Engine — 688cc, 1in. Shaft Diameter, Commercial-Duty, Model# GX630RHQXA
Engine Displacement
Same
389 cc
688 cc
688 cc
688 cc
Engine Type
Same
Horizontal
GX Series OHV V-twin Commercial-duty
GX Series OHV V-twin Commercial-duty
GX Series OHV V-twin Commercial-duty
Shaft Diameter
Same
1 in
1 in
1 in
1 in
Shaft Diameter Metric
Same
25.4 mm
-
-
-
Shaft Length
Same
3.48 in
2.9 in
2.9 in
2.9 in
Shaft Length Metric
Same
88.39 mm
-
-
-
Fuel Type
Same
Gasoline
-
-
-
Start Type
Same
Electric and Recoil
Electric
Electric
Electric
Net Torque
Same
19.5 ft-lbs.
35.6 ft-lbs.
35.6 ft-lbs.
35.6 ft-lbs.
Crankshaft
Same
Q-Type
Q-type
Q-type
Q-type
Cylinders (qty.)
Same
1
2
2
2
Cylinder Bore
Same
Cast Iron
Integrated
Integrated
Integrated
Net Power Output
Same
11.1 HP
20.8 HP
20.8 HP
20.8 HP
Compression Ratio
Same
8.2:1
9.3:1
9.3:1
9.3:1
Fuel Tank
Same
Yes
No
No
No
Fuel Tank Capacity
Same
6.4 qt
-
-
-
Oil Capacity
Same
1.16 qt
2 qt
2 qt
2 qt
Low Oil Shutdown
Same
Yes
-
-
-
Low Oil Alert
Same
Yes
Yes
No
Yes
Max. RPM
Same
3,600
-
-
-
CARB Approved
Same
No
-
-
-
Governor System
Same
Centrifugal Mass
Mechanical
Mechanical
Mechanical
Ignition System
Same
Digital CDI With Variable Timing
Electonic, Digital CDI W/variable Ignition Timing
Electonic, Digital CDI W/variable Ignition Timing
Electonic, Digital CDI W/variable Ignition Timing
Carburetor
Same
Butterfly Float Type
2-barrel, Fuel Cut Solenoid, Inner Vent
2-barrel, Fuel Cut Solenoid, Inner Vent
2-barrel, Fuel Cut Solenoid, Inner Vent
Lubrication System
Same
Splash
Full Pressure
Full Pressure
Full Pressure
Bearing Type
Same
Ball
-
-
-
Cooling System
Same
Air
Air
Air
Air
Bore
Same
3.5 in
3.1 in
3.1 in
3.1 in
Stroke
Same
2.5 in
2.8 in
2.8 in
2.8 in
Air Cleaner Type
Same
Dual Element
Dual Element
Dual Element
Dual Element
Choke Control
Same
Manual
Manual
Manual
Remote
Throttle Control
Same
Manual
Manual
Manual
Remote
Fuel Filter
Same
Yes
-
-
-
Muffler Included
Same
Yes
No
No
No
Product Weight
Same
70.0000 lb
-
-
-
Dimensions L x W x H (in.)
Same
16.0 x 18.0 x 17.6 in
-
-
-
Shaft Keyway
Same
-
0.25 in
0.25 in
0.25 in
PTO Height
Same
-
5.25 in
5.25 in
5.25 in
Shaft Rotation (From PTO Shaft Side)
Same
-
Counter Clockwise
Counter Clockwise
Counter Clockwise
Charging System Amps
Same
-
2.7
17
3
See All Horizontal Engines
See All Honda Engines Horizontal Engines
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