G-Force II 4040 HG-DD Pressure Washer

Designed for large residential and commercial contractors, the G-Force II 4040 HG-DD pressure washer offers high-powered performance and increased flow. Built to withstand weekly use, it combines strong pressure and flow capabilities in a compact, durable design, making it ideal for demanding cleaning tasks.

Honda® Engine – Dependable & Easy to Start

  • High-performance engine ensures consistent power and efficiency.
  • Oil Alert system automatically shuts down the engine to prevent damage from low oil levels.
  • Thermal sensor protection prevents pump overheating in bypass mode, extending its lifespan.

GP Triplex Plunger Water Pump

  • Built for durability and high efficiency, delivering reliable performance under demanding conditions.

Heavy-Gauge Aluminum Frame – Lightweight & Corrosion Resistant

  • Up to 40% lighter than steel, making it easy to transport and maneuver.
  • Corrosion-resistant construction protects against water and chemicals.
  • Standard on all Graco models, backed by a lifetime warranty.

EZ Start Pressure Relief – Effortless Operation

  • Prevents pressure build-up for smooth and easy starts.
  • No need to pull the gun trigger while starting the washer.

Compact & Efficient Direct Drive System

  • Lightweight design with fewer components for easy handling.
  • The pump connects directly to the engine’s drive shaft, maximizing power transfer.
  • Matches the engine’s RPM (typically 3,500 rpm) for consistent high-pressure performance.
SKU: 25N677 Category:

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    Specification Details
    Engine Brand Honda
    Engine Model GX390
    Fuel Tank Capacity (qt) 6.9
    Hose Inlet Diameter (in) 3/8
    Hose Length (ft) 50
    Includes Professional-Grade Pressure Washer Spray Gun with Quick Connects, 36 in Pressure Washer Wand with Quick Connect, 3/8 in x 50 ft Non-Marking Pressure Washer Hose, 4 ft Chemical Injector Hose with Strainer, 0° Red Pressure Washer Tip, 15° Yellow Pressure Washer Tip, 25° Green Pressure Washer Tip, 40° White Pressure Washer Tip, Black Chemical Pressure Washer Tip
    Maximum Flow Rate (GPM) 4
    Maximum Fluid Pressure (psi) 4000
    Maximum Operating Temperature (°F) 145
    Maximum Working Pressure (MPa) 27.6
    Maximum Working Pressure (psi) 4000
    Model G-Force II
    Motor Drive Type Direct Drive
    Pump Brand GP
    Pump Type Triplex Plunger
    Recommended Weekly Usage (Hours) 20-30
    Series 4040
    Type Gas Pressure Washer
    Weight (lb) 92