Engine | Honda GX 630H

• Engine Type Air-cooled 4-stroke OHV
• Bore x Stroke 78 X 72 mm
• Displacement 688 cm
• Net Power Output* 20.8 hp (15.5 kW) @ 3,600 rpm
• Net Torque 35.6 lb-ft (48.3 Nm) @ 2,500 rpm
• PTO Shaft Rotation Counterclockwise (from PTO shaft side)
• Compression Ratio 9.3:
• Lamp/Charge coil options 2.7A, 17A, 26A
• Carburetor Horizontal type, two barrel butterfly valve, internal vent
• Ignition System Digital CDI with variable ignition timing
• Starting System Electric
• Lubrication System Forced lubrication
• Governor System Mechanical
• Air Cleaner Dual element
• Oil Capacity 2.1 US qt (2.0l)
• Fuel Unleaded 86 octane or higher
• Dry Weight 44kg

Fuel Efficient Operation

• Fuel economy is similar to fuel injection, with the simplicity of carburetion.
• Digital CDI ignition system with variable timing Learn More
• Includes a rev limiter to protect against damage from over-revving.
• Two barrel inner-vent carburetor for more precise fuel metering
• Insert style rod bearings

High Output Performance

• Hemispherical combustion chamber delivers rapid combustion Learn More
• 9.3:1 compression ratio generates high power output without the need for premium fuel
• Forged steel crankshaft
• Pressure fed crankshaft bearings

Smooth Performance

• Integrated cylinder and head Learn More
• Racing inspired forged steel connecting rods

Exceptionally Quiet

• High capacity 36 blade cooling fan
• Aluminum push rods with steel tips - lighter weight, lower vibration, and quieter operation

Proven Reliability

• High capacity pump facilitates consistent oil delivery Learn More
• Dual cylindrical air filter
• Large diameter air intake for superior cooling
• Oil Alert Learn More
• Includes a rev limiter to protect against damage from over-speeding.
• Insert style rod bearings

Easy to Use and Maintain

• Hour meter available
• Conveniently located controls, with several configurations available based on user preference
• Automotive-type spin-on oil filter

Easy Starting

• Automatic mechanical de-compression system Learn More
• Variable ignition timing

Emissions Compliant

• No catalyst necessary

Available Options

• High capacity charging systems
• A variety of control box configurations
• Hour meter
• Dry fuel versions