Honda GX / GX390 Series — 4-Stroke OHV (Overhead Valve), single cylinder, air-cooled

• 11.7Hp at 3600 RPM
• Compression Ratio: 8.2:1
• Ignition System: Digital CDI with variable timing
• Net Torque: ~19.5 ft-lb (≈26.5 Nm) at ~2,500 rpm
• Crankshaft: 1.00 in (shaft), threaded or “1-inch diameter tapped … with keyway” in many cases.
• Fuel Tank: 6.4 US Quarts.
• Physical Dimensions: ~16.0 in (407 mm) × 19.1 in (485 mm) × 17.7 in (449 mm)

* This product cannot be shipped to California due to state regulations.