GRACO 25N637 - G-FORCE II 4240 HA-DD Pressure Washer, 4200 PSI, 4 GPM w/ Honda Engine & AR Pump

Ideal for remodelers & property maintenance cleaning needs, the G-Force II 4240 KA-DD pressure washer is the best choice for medium duty applications. It's light, compact, and is the perfect choice when you need consistent reliability for the occasional cleaning job.

• Kohler® Engine
  
  • Reliable, powerful & easy-to-start
• Reliable, AR Triplex Plunger Water Pump
• 100% Heavy-Gauge Aluminum Frame
  
  • Up to 40% lighter than steel frames
  • Corrosion resistant to water and chemicals
  • Standard on all Graco models
  • Lifetime Warranty
• EZ Start Pressure Relief For Easier Starting
  
  • Standard Graco feature
  • Allows water bypass pump to eliminate pressure build-up in the system
  • No need to pull the gun trigger while starting the washer
• Direct Drive
  
  • Compact design with fewer components and lighter weight
  • Pump is connected directly to the drive shaft of the engine
  • Pump rpm matches that of the engine (usually around 3500 rpm)

Additional Specifications

• Max Working Pressure: 4200 PSI (29 MPa, 290 Bar)
• Flow Rate: 4.0 GPM
• Crankcase Oil Capacity: 16.0 oz (0.47 L)

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

Compatible Equipment

• G-FORCE II pressure washer systems
• Direct-Drive parts shown in diagram
• Pump 17Z102
• Pump 17Z103
• Pump 17Z104

Related Parts

• 25N640
• 25N641
• 25N677 - G-FORCE II 4040 HG-DD Pressure Washer, 4000 PSI, 4 GPM w/ Honda Engine & GP Pump
• 25N681, 25N677K
• 25N678 - G-FORCE II 4040 HC-DD Pressure Washer, 4000 PSI, 4 GPM w/ Honda Engine & CAT Pump
• 25N682, 25N678K
• 25N679 - G-FORCE II 4040 HG-BD Pressure Washer, 4000 PSI, 4 GPM w/ Honda Engine & GP Pump
• 25N683 - G-Force II 4040 HG-BD Pressure Washer, CAT Brass Triplex pump, 4000 PSI

This is a 4240 model pressure washer with Honda engine, AR pump, and direct drive system. Based on the naming convention shown in the diagram, this appears to be a 4200 PSI, 4.0 GPM unit with Honda engine, AR pump, and direct drive configuration. 25N637 appears as a model number in the header for compatible models that use the direct-drive parts shown in this diagram, but no specific specifications for this model are provided on this page 25N637 is listed as a compatible model number for the pump parts shown in this diagram. The crankcase oil capacity specification applies to the pump used with this model.

Reference Manuals

• 3A6588 (Page 2) Pressure Washers, Operation, Repair, Parts