Horizontal Shaft Engines



Honda's V-Twin range of engines are the cream of the crop, powering pressure washers, water pumps and commercial lawncare equipment.

Commonly used to power pressure washers, generators, construction, industrial, horticultural equipment and small vehicles.


The fuel economy of the GX690 V-Twin is similar to fuel injection, with the simplicity of carburetion ensuring that running this unit is easy on both your pocket and the environment.

It features a digital CDI ignition system with variable timing, as well as a forged steel crankshaft and insert style rod bearings for efficient operation. There's also a rev limiter to protect against damage from over-revving. A hemispherical combustion chamber delivers rapid combustion.

Add a two barrel inner-vent carburetor for more precise fuel metering and a 9.3:1 compression ratio, and you'll be generating high power output without the need for premium fuel.


The GX690's high capacity pump facilitates consistent oil delivery, and a handy oil alert so there is no risk of running dry and doing damage to the engine. There's a dual cylindrical air filter, and a large diameter air intake on board for superior cooling, perfect when operating over long periods of time.

The result is a long-lasting, high-performing and reliable engine.

TypeAir cooled 4-stroke OHV petrol engine, 90° V-twin design, horizontal shaft
Bore & Stroke2 / 78 x 72mm
Displacement688 cc
Compression Ratio9.3:1
Net Power

16.5 kW (22.1 HP) / 3600rpm

Continuous Rated Power

11.5 kW (15.4 HP) / 3000 rpm 13.0 kW (17.4 HP) / 3600rpm

Max Net Torque48.3 Nm / 4.93 kgfm / 2500rpm
Ignition SystemDigital CDI with variable ignition timing
Starting SystemElectric Start
Fuel Consumption at Rated Power6.7 L/hr - 3600rpm
Recommended FuelUnleaded
Lubrication SystemFull-pressure
Descriptor Text

Without oil filter replacement: 1.5L
With oil filter replacement: 1.7L

Dry Weight44.6 kg approx.
Length429 mm
Width410 mm
Height438 mm