Honda GX390 QZNR Horizontal Engine

The Honda GX390 QZNR is a robust and reliable 4-stroke, air-cooled horizontal-shaft engine designed for a wide range of commercial and industrial applications. It is widely used in heavy-duty machinery like generators, pressure washers, water pumps, and construction equipment. With a powerful engine design and user-friendly features, it provides excellent performance and durability.

Engine Description:

• Engine Model: Honda GX390 QZNR

• Type: 4-stroke, single-cylinder, overhead valve (OHV), air-cooled

• Displacement: 389cc

• Bore x Stroke: 88mm x 64mm

• Compression Ratio: 8.0:1

• Ignition System: Transistorized ignition (TCI)

• Fuel System: Single-choke, diaphragm-type carburetor

• Lubrication System: Splash lubrication with oil filter

• Cooling System: Air-cooled

Performance Specifications:

• Maximum Output: 11.7 HP (8.7 kW) @ 3,600 RPM

• Maximum Torque: 25.4 Nm @ 2,500 RPM

• Fuel Consumption: Approx. 2.2 L/h (at 3,600 RPM)

• Fuel Tank Capacity: 6.1 liters

• Oil Capacity: 1.1 liters

• Recommended Fuel: Unleaded gasoline

Starting System:

• Electric Starter: Equipped with an electric start system for easy starting

• Recoil Starter: Backup recoil starter included for manual starting if needed

Shaft and Mounting:

• Shaft Type: Horizontal shaft with keyway

• Shaft Diameter: 1 inch (25.4 mm)

• Shaft Length: 3.5 inches (88.9 mm)

• Keyway: Yes, for secure attachment of machinery

Dimensions and Weight:

• Dimensions (L x W x H): 442mm x 412mm x 472mm

• Dry Weight: 33.5 kg (73.8 lbs)

Additional Features:

• Low Oil Alert: Automatic engine shutdown when oil levels are too low to prevent damage

• Dual-Element Air Filter: For better filtration and improved engine longevity

• Muffler: Standard muffler with a spark arrester for safety

• Vibration Reduction: Designed for smoother operation with minimal vibration

• Warranty: 3-year residential warranty, 1-year commercial warranty