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Description

Honda Horizontal Engine – HDA,GX390-QA2

Honda GX390 QA2 Horizontal OHV Engine, 389cc, 11.7 Net HP, 1″ x 3-31/64″ Crankshaft, Tapped 3/8-24UNF 2BTAP, Recoil Start, Model GX390UT2QA2

Specifications
Brand Honda
Model Number GX390UT2QA2
Internal ID HDA-GX390-QA2
Replaces Models GX390U1QA2, GX390UT1 QA2, GX390UT1-QA2, GX390K1-QA2, GX390UT2QA2, GX390UT2QA2, GX390K1QA2
Warranty 3 Year Residential
Available to California Not Available to Ship to California
Weight 78.0 lb
Power Output 11.7 HP @ 3600 RPM
Torque 19.5 lb-ft (26.5 Nm) @ 2500 RPM
Crankshaft Orientation Horizontal
Crankshaft Type Straight
Crankshaft Diameter 1″
Crankshaft Length 3-31/64″
Crankshaft Dimensions 1″ x 3-31/64″
End Tapped Size 3/8-24UNF 2BTAP
Keyway 1/4″
Crankshaft Rotation Direction Counter-Clockwise
Starter Type Recoil
Ignition System Digital CDI with Variable Ignition Timing
Carburetor Butterfly Float
Number of Cylinders One
Cylinder Bore Cast Iron Sleeve
Air Cleaner Dual Element
Oil Capacity 1.16 qt
Low Oil Alert Yes
Fuel Type Unleaded 86 Octane or Higher
Fuel Tank Capacity 6.4 qt
Fuel Pump N/A
Governor System Centrifugal Mass
Lubrication System Splash
Controls Manual Choke, Manual/Remote (Rod) Throttle
Bore x Stroke 88mm x 64mm
Compression Ratio 8.2 : 1
Charging System N/A
Muffler Silent, Spark Arrester, Deflector
What Our Experts Think
  • Powerful & Reliable: The Honda GX390-QA2 Horizontal Engine delivers impressive power and consistent performance, making it ideal for demanding applications.
  • Long-Lasting Durability: Built to withstand harsh conditions, this engine offers exceptional durability and longevity, even under heavy use.
  • Fuel Efficiency: Designed with advanced fuel-saving technology, it ensures extended operation with reduced fuel consumption, lowering overall costs.
  • Quiet & Smooth Operation: Its well-balanced design reduces vibrations and noise, providing a quieter and smoother experience during use.
  • Easy Maintenance: Engineered for quick and easy maintenance, the GX390-QA2 allows for minimal downtime and hassle-free upkeep.
  • Versatile & Powerful: Perfect for a wide range of equipment, including pressure washers, pumps, and industrial machinery, offering the reliability and performance you need for tough jobs.
Q&A

Q: What is the Honda Horizontal Engine – HDA, GX390-QA2?
A: The Honda Horizontal Engine – HDA, GX390-QA2 is a high-performance, reliable engine designed for heavy-duty outdoor machinery. Known for its power and durability, it’s ideal for commercial-grade equipment like generators, pumps, and large lawnmowers.

Q: What are the key features of the GX390-QA2 engine?
A: This engine boasts a robust OHV (Overhead Valve) design, offering excellent fuel efficiency, low emissions, and smooth operation. It features easy starting, high torque, and exceptional performance in demanding conditions.

Q: What are the benefits of using the GX390-QA2 engine?
A: The GX390-QA2 engine provides outstanding power, fuel efficiency, and minimal maintenance. Its long-lasting durability and reliable performance make it perfect for tough, continuous applications in commercial and industrial equipment.

Q: Is the GX390-QA2 engine easy to maintain?
A: Yes, the GX390-QA2 is designed for easy maintenance with accessible parts for quick oil changes, air filter replacements, and general servicing, ensuring minimal downtime.

Q: Can the GX390-QA2 engine be used for different outdoor equipment?
A: Yes, the GX390-QA2 engine is versatile and suitable for various high-demand outdoor equipment, including commercial mowers, pressure washers, water pumps, and other heavy-duty machinery requiring reliable, powerful performance.

Maintenance Tips
  • Oil Change: Change engine oil every 100 hours or annually, whichever comes first.
  • Air Filter: Clean or replace the air filter regularly to ensure proper airflow and engine efficiency.
  • Spark Plug: Inspect and replace the spark plug annually or if engine performance declines.
  • Fuel System: Use fresh, clean fuel and drain the tank if the engine is not in use for extended periods.
  • Coolant: Maintain proper coolant levels to prevent overheating and engine damage.
  • General Inspection: Inspect for leaks, debris, and any loose parts; clean around the engine to ensure proper ventilation.

Additional information

Weight 78.0 kg
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