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Description
Honda GX390 QA2 Horizontal Engine
Honda GX390 QA2 (GX390UT2QA2) horizontal OHV engine is 390cc and puts out 11.7 net HP. This Honda GX has a 1″ x 3-31/64″ crankshaft. The engine has a recoil starter, a silent muffler with a spark arrestor and deflector plus an oil alert system.
The Honda GX390 QA2 Horizontal Engine is a flagship commercial-grade engine. Delivering around 11.7 HP, the GX390 is built for extreme, non-stop professional use. The QA2 model provides superior torque and reliability, making it the top choice for generators, pressure washers, and heavy-duty industrial equipment.
| BRAND | Honda |
|---|---|
| MODEL NUMBER | GX390-QA2 |
| REPLACES MODELS | GX390U1QA2, GX390UT1 QA2, GX390UT1-QA2, GX390K1-QA2, GX390UT2QA2, GX390UT2QA2, GX390K1QA2 |
| WARRANTY | 3 Year Consumer & Commercial |
| SHIPPING WEIGHT | 78 |
| DISPLACEMENT | 389cc |
| STARTER TYPE | Recoil |
| CRANKSHAFT ORIENTATION | Horizontal |
| CRANKSHAFT TYPE | Straight |
| FUEL SYSTEM | Gasoline |
| GEAR REDUCTION | No |
| CRANKSHAFT DIMENSIONS | 1″ x 3-31/64″ |
| CRANKSHAFT LENGTH | 3-31/64″ |
| CRANKSHAFT END TAPPED SIZE | 7/16 – 20 |
| CRANKSHAFT KEYWAY WIDTH | 1/4″ |
| CRANKSHAFT ROTATION DIRECTION (FROM PTO SIDE) | Counterclockwise |
| CYLINDERS | 1 |
| CYLINDER BORE TYPE | Cast Iron |
| AIR CLEANER TYPE | Dual Element |
| FUEL PUMP | No |
| OIL COOLER | No |
| OIL CAPACITY | 38 |
| LOW OIL ALERT | No |
| LOW OIL SHUTDOWN | Yes |
| IGNITION SYSTEM | Digital CDI with Variable Timing |
| CARBURETOR TYPE | Float |
| CHOKE CONTROL | Manual |
| BOLT CIRCLE | 5,6-1/2 |
| PTO HEIGHT | 5 – 1/4 |
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