Honda GX630 Engine

Honda GX630 Twin Cylinder V-Twin Petrol Engine

The Honda GX630 V-Twin is a high-performance, air-cooled, 4-stroke OHV petrol engine designed for demanding industrial, commercial, and agricultural applications. With a 90° V-twin horizontal shaft design, this engine delivers solid, reliable power and exceptional fuel efficiency.

Engine Specifications

• Model: GX630 (GX630RHQZB3)

• Engine Type: Twin cylinder, 4-stroke OHV, air-cooled, 90° V-twin, horizontal shaft

• Displacement: 688 cc

• Net Power: 15.1 kW (20.8 HP) @ 3600 RPM

• Max Torque: 48.3 Nm / 4.93 kgfm @ 2500 RPM

• Output Shaft: 1” keyed

• Start System: Electric start with control box

• Dimensions (LxWxH): 405 × 410 × 438 mm

• Oil Capacity: 1.5 L (without oil filter replacement), 1.7 L (with oil filter replacement)

• Weight: 44.4 kg

• Fuel Tank: Not included

Key Features

• Cast iron bore – enhanced durability and long engine life

• Full pressure lubrication with screw-on oil filter – protects internal components

• Digital CDI ignition with variable timing – efficient combustion and consistent performance

• Dual cylindrical air filter + large diameter air intake – superior cooling for extended operation

• Efficient OHV combustion design – delivers high torque and power while reducing fuel consumption

• Rev limiter – protects against engine damage from over-revving

• Two-barrel inner-vent carburettor + 9.3:1 compression ratio – precise fuel metering and high power output without premium fuel

• Forged steel crankshaft & insert-style rod bearings – for reliability and smooth operation

Applications

Honda’s GX630 V-Twin engines are trusted across a wide range of industries, including:

• Pressure washers and water pumps

• Commercial lawncare equipment

• Cultivators and agricultural machinery

• Generators and industrial applications

• Heavy-duty forestry and construction equipment

Fuel Efficiency

The GX630 V-Twin combines carbureted simplicity with fuel-efficient performance comparable to fuel-injected engines. It ensures smooth, reliable operation while being easy on both your budget and the environment.

FREE Service Pack (valued at $110.00)

• 2 × 1 L engine oil

• 1 × replacement air filter

• 2 × NGK spark plugs

• 1 × spark plug spanner

The RIEQUIP Advantage

• Every engine is test-run before dispatch

• 3-year warranty for peace of mind

• Approved Honda service agents nationwide

• Guaranteed spare parts backup for the life of your machine

The Honda GX630 V-Twin is engineered for durability, performance, and efficiency, making it the ideal power source for demanding professional and industrial applications.