G-Force II 4240 HA-DD Pressure Washer

Designed for large residential and commercial contractors, the G-Force II 4240 HA-DD pressure washer delivers powerful performance and high flow rates. Built for durability and reliability, it handles weekly use with ease, providing strong pressure and flow in a compact, rugged design.

Honda® Engine – Powerful & Easy to Start

  • Dependable and high-performance engine ensures consistent operation.
  • 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 pump life.

AR Triplex Plunger Water Pump

  • Designed for long-lasting durability and efficient performance under demanding conditions.

Heavy-Gauge Aluminum Frame – Lightweight & Corrosion Resistant

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

EZ Start Pressure Relief – Effortless Operation

  • Reduces pressure build-up, ensuring smooth and easy starting.
  • 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 is directly connected to the engine’s drive shaft, maximizing power transfer.
  • Matches the engine’s RPM (typically 3,500 rpm) for consistent high-powered cleaning.
SKU: 25N637 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, Black Chemical Pressure Washer Tip
    Maximum Flow Rate (GPM) 4
    Maximum Fluid Pressure (psi) 4200
    Maximum Operating Temperature (°F) 145
    Maximum Working Pressure (MPa) 29
    Maximum Working Pressure (psi) 4200
    Model G-Force II
    Motor Drive Type Direct Drive
    Pump Brand AR
    Pump Type Triplex Plunger
    Recommended Weekly Usage (Hours) 20-30
    Series 4240
    Type Gas Pressure Washer
    Weight (lb) 102