GRACO G-Force II 4040 HG-DD 4000 PSI Pressure Washer (25N681)

SKU: 25N681


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GRACO G-Force II 4040 HG-DD 4000 PSI Pressure Washer (25N681)


Higher Power & Flow - Large Residential or Commercial

Our G-Force II 4040 HG-DD pressure washer is built tough to handle weekly use and deliver high flow and pressure in a compact, durable package.

Sporting a Honda GX390, GP Triplex Plunger Pump with an output of 15lpm & 4000 PSI, this is your 42kg performer. This pressure washer is a direct drive system.

Being a Direct Drive pressure washer, the pump is connected directly to the drive shaft of the engine. The pump revolutions matches that of the engine (usually around 3500 rpm). Direct drive units are more compact in design, lighter weight and have fewer components.

The Unit Includes:

  • 0.95cm (3/8") x 15m (50ft), non-marking hose with Quick Connect Fittings
  • Professional Grade 91cm Gun & Wand Assembly (36") with Quick Connect Fittings
  • Integrated Chemical Injector Kit Included

4.0 Range of Tips Included:

  • 0° Red - 805543
  • 15° Yellow - 805544
  • 25° Green - 805545
  • 40° White - 805546
  • Chemical injector - 805634


 Technology that makes the Difference - Key Features to Consider for Maximum Productivity

While pressure washers are simple machines, understanding the key components and differences will help you make the right purchase.

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     Part Number

    CategoryLarge Residential / Commercial
    Weekly Usage20-30 hours per week
    Pressure PSI4000
    Flow LPM15
    Cleaning Units (psi x gpm)16800
    Weight (kg)42
    Water PumpGP, Triplex Plunger Pump
    Unloader TypeEZ Start, Adjustable Pressure External Bypass
    EngineHonda GX390
    Hose Assembly0.95cm (3/8") x 15m (50 ft), non-marking w/Quick Connects
    Gun/Wand AssemblyProfessional Grade Gun, 91cm (36") with Quick Connect Fittings
    Chemical InjectorIntegrated, Kit Included

    4.0 Orifice

    0° Red - 805543

    15° Yellow - 805544

    25° Green - 805545

    40° White - 805546

    Chemical Injector - 805634


    105.41 cm
    63.50 cm
    59.69 cm



    May require help to carry

    Total Weight: 66.22 kg


    The Engine

    Commercial-grade Kohler Engine vs lower quality, off-brand engines

    Brand name manufacturers in the business of building great engines versus

    Proven reputation for quality and ongoing support and service

    The Frame

    Lighter frames are easier to handle

    Aluminium frame - a standard Graco feature that's lightweight, resistant to rust, and easy to move around the job site versus

    Steel frame - heavy, harder to move and load in the truck

    Look for durability in the axle to ensure the frame remains constant and square:

    Professional-grade 19mm axles versus smaller 16mm axles on lower quality models

    The Water Pump

    Professional-grade Triplex plunger pumps vs. consumer-grade Axial pumps

    AR, GP and CAT pumps versus lower quality, off-brand pumps

    Forged Brass Manifold (on all Graco pumps), reduces heat to extend life versus stainless steel caps and manifold

    Good, Better, Best options quality, serviceability and life of the pumps

    The Pressure Unloader

    Letting the motor run while not spraying can build up pressure and excess heat in the system, causing the pressure washer to overheat and shut down. The pressure unloader prevents overheating and prolongs the life of your sprayer.

    Adjustable pressure unloaders, a standard Graco feature, versus fixed unloaders allow you to vary the pressure based on the application.

    Integrated - ideal for jobs with constant spraying while the motor is running

    External - ideal for longer jobs with lots of stops and starts. Allow water to run cooler for greater protection against overheating


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