GRACO 25N678 - G-FORCE II 4040 HC-DD Pressure Washer, 4000 PSI, 4 GPM w/ Honda Engine & CAT Pump

• Honda® Engine
  
  • Reliable, powerful & easy-to-start
  • Oil Alert shuts down engine to prevent damage if oil level drops too low
  • Thermal sensor prevents pump from overheating in bypass mode
• Premium CAT Water Pump
  
  • The most reliable pumps in the industry
  • The most durable, longest-lasting pumps available
  • 2X longer life than other pumps
• External Pressure Unloader
  
  • Trouble-free, adjustable pressure
  • Ability to match application requirements
  • Keeps water cooler and prolongs pump life
• EZ Start Pressure Relief For Easier Starting
  
  • Allows water bypass pump to eliminate pressure build-up in the system
  • No need to pull the gun trigger while starting the washer
  • Standard Graco feature
• 100% Heavy-Gauge Aluminum Frames
  
  • Up to 40% lighter than steel frames
  • Corrosion resistant to water and chemicals
  • Standard on all Graco models
  • Lifetime Warranty
• 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: 4000 PSI (27.6 MPa, 276 Bar)
• Flow Rate: 4.0 GPM
• Engine: Honda
• Drive System: Direct Drive

Compatible Equipment

• G-FORCE II series pressure washers
• Direct-Drive pressure washer systems
• GX270 engine
• AR RSV series pump
• CAT or GPPX series pump

Related Parts

• 25N682, 25N688K
• 25N679
• 25N683
• 25N680
• 25N684, 25N680K
• 25N634
• 25N635
• 25N636

This is a complete pressure washer unit model. Related parts include other 4040 series models with different engine (Honda/Kohler), pump (CAT/GP), and drive system (Direct Drive/Belt Drive) configurations. 25N678 is listed as one of the models covered by this direct-drive parts diagram. This appears to be a complete pressure washer unit model number rather than an individual replacement part. The diagram shows the exploded view of components for this and related models. 25N678 is one of the main models listed in this Direct-Drive parts list. It appears throughout the parts list as a compatible model for various components including engines, pumps, frames, handles, wheels, hoses, nozzles, thermal valves, and labels. There is also a related model 25N678K mentioned.

Reference Manuals

• 3A6588 (Page 2)