Honda 390 Engine: Specs, Configuration, Oil, and Service Intervals

Honda 390 Engine Specs

The Honda 390 engine is a powerful and reliable choice for various applications, including generators, pressure washers, and small construction equipment. This article will provide you with detailed specifications of the Honda 390 engine, including its configuration, engine oil specs, and service intervals.

Engine Configuration

The Honda 390 engine features a robust and efficient design that ensures optimal performance and durability. Here are the key specifications of this engine:

• Engine Type: 4-stroke, single-cylinder, air-cooled
• Displacement: 389 cc
• Bore & Stroke: 88 mm x 64 mm
• Compression Ratio: 8.2:1
• Valve Train: OHV
• Fuel System: Carburetor
• Ignition System: Transistorized magneto ignition
• Starting System: Recoil
• Oil Capacity: 1.1 liters
• Fuel Tank Capacity: 6.1 liters

Engine Oil Specs & Service Intervals

Proper maintenance and regular oil changes are crucial for the longevity and performance of any engine, including the Honda 390. Here are the recommended engine oil specifications and service intervals for the Honda 390 engine:

• Recommended Engine Oil: SAE 10W-30
• Oil Capacity: 1.1 liters
• Oil Change Interval: Every 50 hours or 3 months, whichever comes first

When performing an oil change on your Honda 390 engine, follow these steps:

1. Ensure the engine is cool and turned off.
2. Place a drain pan beneath the engine to catch the old oil.
3. Remove the oil drain plug located on the bottom of the engine crankcase.
4. Allow the old oil to drain completely.
5. Replace the oil drain plug and tighten it securely.
6. Remove the oil filler cap located on the top of the engine.
7. Pour the recommended SAE 10W-30 engine oil into the oil filler opening.
8. Check the oil level using the dipstick and add more oil if necessary.
9. Replace the oil filler cap and tighten it securely.
10. Dispose of the old oil properly at a recycling center.

Remember to always refer to the Honda 390 engine’s user manual for specific instructions and any additional maintenance requirements.

Regularly maintaining your Honda 390 engine according to the recommended service intervals and using the correct engine oil will ensure its optimal performance and longevity. Enjoy the reliability and power that the Honda 390 engine brings to your equipment!