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Graco G-Force II 4040 HC-DD – Maximum Cleaning Power, CAT Pump, Honda Engine, Professional Equipment

Graco G-Force II 4040 HC-DD – professional cold water pressure washer for demanding cleaning and surface preparation tasks with 4000 psi (276 bar), 4.0 gpm (15 l/min), CAT Triplex Plunger Pump, Honda GX390 engine and direct-drive system.

The G-Force II 4040 HC-DD is designed as a top-tier model for large commercial and industrial applications. The combination of high pressure performance, strong water flow, durable aluminum frame and external adjustable pressure unloader ensures reliable operation even during long working hours, frequent start-stop cycles, and harsh cleaning conditions.

  • 4000 psi / 4.0 gpm – high cleaning power for heavy-duty tasks
  • CAT Triplex Plunger Pump – extremely durable premium pump for professional continuous use
  • Honda GX390 engine – powerful industrial-grade engine for reliable performance
  • External bypass unloader – cooler water flow, better overheating protection and adjustable working pressure
  • Heavy-gauge aluminum frame – lightweight, corrosion-resistant and built for tough jobsite conditions

Details & Information

Product Features
  • 4000 psi (276 bar) working pressure for intensive cleaning applications
  • 4.0 gpm (15 l/min) water flow for high surface coverage
  • CAT Triplex Plunger Pump with 5-year pump warranty
  • Direct drive system for compact design and direct power transmission
  • EZ Start pressure relief for easier starting
  • External adjustable pressure unloader for application-specific pressure control and cooler operation
  • Heavy-gauge aluminum frame with lifetime warranty
  • Corrosion-resistant construction – lighter than steel and built for daily professional use
  • 100% factory tested and designed for professional applications
Practical advantage: Ideal for users who require maximum reliability, high pressure performance and exceptionally durable pump technology during long, intensive cleaning operations.
Model Overview – Configuration & System Design

The 4040 HC-DD model is the Honda / CAT / direct-drive configuration within the G-Force II 4040 series and belongs to the large commercial / industrial class for 30+ hours of use per week.

Component Typical Benefit
Honda GX390 engine Strong, proven engine performance for demanding daily use
CAT Triplex Plunger Pump Long service life, high durability and professional serviceability
Direct drive Compact design with fewer components and direct power transmission
External bypass unloader Ideal for frequent stop-start applications, reduces heat stress
Heavy-gauge aluminum frame Lower weight, high corrosion resistance and jobsite durability
Note: Included in delivery: 3/8" x 50 ft non-marking high-pressure hose with quick connects, professional-grade spray gun with 36" lance, quick-connect chemical injector, and nozzle set (0°, 15°, 25°, 40° and chemical nozzle).
Setup & Commissioning

To ensure the Graco G-Force II 4040 HC-DD delivers its full performance safely and reliably, a quick system check before startup is recommended:

  • Check water supply and inlet filter for clean, unrestricted flow
  • Ensure hose, gun and lance are properly and tightly connected
  • Select nozzle size and spray angle suitable for the application
  • Adjust the external pressure unloader according to the task
  • Use the chemical injector only when needed with the correct chemical nozzle
  • Check engine oil and pump condition before longer operations
Tip: The external bypass unloader is especially beneficial for applications with frequent interruptions, as it keeps the water cooler and better protects the pump.
Applications / Use Cases
  • Large-scale commercial and industrial cleaning tasks
  • Intensive façade, yard and surface cleaning
  • Surface preparation prior to coating applications
  • Cleaning of concrete, driveways, walkways and machinery
  • Construction site and fleet cleaning with heavy usage demands
  • Long workdays requiring high durability and performance
Fuel tank capacity (L): 6.5
Hose length (cm): 152
Hose length (m): 15.2
Maximum delivery rate (L/min): 15.14
Maximum operating pressure (kPa): 2750
Maximum operating pressure (psi): 4000
Model: G Force II
Motor series: GX390
Permissible operating pressure (bar): 275
Pump type: Triplex piston
Series: 4040 HC-DD
Type: Petrol-powered high-pressure cleaner
Weight (kg): 60.3
More information
  • Product number: 1035362
  • Manufacturer: Graco
  • EAN: 00755652850304
  • Weight: 68.492 kg
  • Length: 1050 mm
  • Width: 600 mm
  • Height: 640 mm

Technical details

Operating specifications
UPC Product 755652850304
Division CED
Price Block 155
Country of Origin US
Unit of measurement EA
Height 64 cm
Length 105 cm
Width 60 cm
Volume 0 .403 m³
Shipping weight 68.49 kg
HTS Code (EU) 8424300800
HTS Code (UK) 8424300800
Technical Specifications
Fuel tank capacity (L) 6.5
Hose Length (cm) 152
Maximum flow rate (L/min) 15.14
Maximum working pressure (bar) 275
Maximum working pressure (kPa) 2750
Maximum working pressure (psi) 4000
Model G-Force II
Engine Series GX390
Series 4040 HC-DD
Weight (kg) 60.3

Further manufacturer information

Produktbroschüre
Produkthandbücher
Verkaufsliteratur
Zertifizierungen
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