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Operation, Repair, Parts
Pressure Washers
For high pressure water cleaning. For professional use only.
See page 3 for model information and maximum working pressure.
Important Safety Instructions
Read all warnings and instructions in this manual and in
gas engine manual before using the equipment. Save
these instructions.
Direct-Drive Models
Belt-Drive Models
3A6588B
EN
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Table of Contents
Related Manuals for Graco 3325 HA-DD
Summary of Contents for Graco 3325 HA-DD
- Page 1 Operation, Repair, Parts Pressure Washers 3A6588B For high pressure water cleaning. For professional use only. See page 3 for model information and maximum working pressure. Important Safety Instructions Read all warnings and instructions in this manual and in gas engine manual before using the equipment. Save these instructions.
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Page 2: Table Of Contents
Belt Tension Adjustment ....17 Graco Information ......33... -
Page 3: Models
Models Models Operating Pressure Flow Drive Part No. Model Engine Pump System 25N634 3325 HA-DD 3300 22.7 Honda Direct Drive 25N638 25N635 3230 HA-DD 3200 22.1 Honda Direct Drive 25N639 25N636 4240 KA-DD 4200 Kohler Direct Drive 25N640 25N637 4240 HA-DD... -
Page 4: Safety Symbol Table
Safety Symbol Table Safety Symbol Table The following safety symbols appear throughout this manual and on warning labels. Read the table below to understand what each symbol means. Symbol Meaning Symbol Meaning Do Not Overfill Gas Tank Burn Hazard Moving Parts Pinch Toxic Fluid or Carbon Monoxide Hazard Electric Shock Hazard Do Not Stop Leaks or Deflect Leaks... -
Page 5: Warnings
Warnings Warnings The following warnings are for the setup, use, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable. - Page 6 • Check hoses and parts for signs of damage. Replace any damaged hoses or parts. • Use Graco replacement parts or accessories that are approved for the rated pressure of the pressure washer. • Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.
- Page 7 Warnings WARNING EQUIPMENT MISUSE HAZARD Misuse can cause death or serious injury. • Always wear appropriate gloves, eye protection, and a respirator or mask when spraying. • Do not operate or spray near children. Keep children away from equipment at all times. •...
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Page 8: Component Identification
Component Identification Component Identification Direct-Drive Models Pump Oil Cap Water Pump Thermal Relief Valve Engine Choke ON/OFF Switch Fuel Valve Unloader High-Pressure Outlet High-Pressure Washer Hose Low-Pressure Inlet Gas Cap Nozzles Trigger Lock Chemical Injector Hose 3A6588B... -
Page 9: Component Identification
Component Identification Component Identification Belt-Drive Models Pump Oil Cap Water Pump Thermal Relief Valve Engine Choke ON/OFF Switch Fuel Valve Unloader High-Pressure Outlet High-Pressure Washer Hose Low-Pressure Inlet Gas Cap Nozzles Trigger Lock Chemical Injector Hose 3A6588B... -
Page 10: Pressure Relief Procedure
Pressure Relief Procedure Pressure Relief Procedure Thermal Relief Valve Follow the Pressure Relief Procedure whenever you see this symbol. To ensure the water temperature does not exceed acceptable levels, never allow the unit to operate continuously in bypass mode (unit running with gun trigger closed) for more than three minutes. -
Page 11: Before Starting The Machine
Before Starting the Machine Before Starting the Machine Personal Protective Equipment Engine Fuel Tank INJECTION AND INHALATION HAZARD A minimum of 86 octane fuel is recommended for use Proper attire is essential to your safety. It is advised to with this unit. Do not mix oil with gasoline. utilize whatever means necessary to protect eyes, ears and skin. -
Page 12: Setup
Setup Setup Connect Water Supply 2. Incoming GPM must be at least one gallon more than the outgoing GPM stated on pressure washer nameplate. NOTE: You can check GPM by timing Select a water supply hose which is a quality grade of how long it takes to fill a 5 gallon container. -
Page 13: Nozzle Selection
Setup Nozzle Selection 40° - WASHING • Light cleaning and washing. Various nozzles may be quick-connected into the end of the wand to change the spray pattern or use the • Washing and rinsing of automobiles and boats. detergent feature. •... -
Page 14: Starting The Washer
Setup Starting the Washer NOTICE Do not allow unit to operate in bypass mode (with trig- ger closed) for more than three minutes without trig- gering gun. This can cause premature failure of pump packing seals and result in costly pump repair. Never look directly into the nozzle. -
Page 15: Cleaning With Detergents
Setup Cleaning with Detergents 6. Start the washer. See Starting the Washer, page 7. To apply solution; disengage trigger lock and squeeze trigger. A detergent/water mixture will exit low pressure nozzle. Start spraying lower portion of BURN OR EXPLOSION HAZARD surface being cleaned and move up, using long Always wear protective safety attire. -
Page 16: Storage
Storage Storage 1. Shut off unit and water supply. • Three foot (0.92 m) hose, 1/2-3/4 in. (13-19 mm) ID with a 3/4 in. male garden hose fitting. 2. Relieve system pressure by pointing gun away from yourself and anyone else and squeezing trigger until Procedure water flow ceases to exit nozzle. -
Page 17: Maintenance
Maintenance Maintenance Engine Quick Couplers The engine instructions that accompany the unit detail There is an o-ring seal inside the female quick couplers. specific procedures for engine maintenance. Following This o-ring will deteriorate or, if the unit is allowed to the engine manufacturer's recommendations will extend pump without the high pressure hose or nozzle engine life. -
Page 18: Troubleshooting
Troubleshooting Troubleshooting 1. Follow Pressure Relief Procedure, page 10, before checking or repairing gun. 2. Check all possible problems and causes before disassembling gun. Problem Cause Solution Engine not starting or hard to start No gasoline in fuel tank or carburetor Fill the tank with gasoline and open fuel shut off valve. - Page 19 Troubleshooting Problem Cause Solution Water in pump oil Humid air condensing inside Change oil as specified in crankcase Maintenance on page 17. Worn packings Install new packings. Oil seals are leaking Install new oil seals. Packings failing frequently or Scored, damaged, or worn plungers Install new plungers.
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Page 20: Parts - Direct-Drive
Parts - Direct-Drive Parts - Direct-Drive Models 25N634, 25N635, 25N636, 25N637, 25N638, 25N639, 25N640, 25N641, 25N677, 25N678, 25N681, 25N682 3A6588B... -
Page 21: Parts List - Direct-Drive
Parts List - Direct-Drive Parts List - Direct-Drive Models 25N634, 25N635, 25N636, 25N637, 25N638, 25N639, 25N640, 25N641, 25N677, 25N678, 25N681, 25N682 Ref. Part Description Qty. Ref. Part Description Qty. 16Y721 Models 25N638, 25N639, 25N641, ENGINE 25N681, 25N682 116298 GX200 (Models 25N684, 25N638) 17Z429 Model 25N636 803900... -
Page 22: Parts List - Pump 17Z102, 17Z103, 17Z104
17Z117 KIT, valves (includes 11, 35) 17Z112 KIT, water seals (includes 37, 38, 40-42) Kit services 3 cylinders 127506 KIT, chemical injector (includes 17-19) † Not all repair parts available through Graco. 17Z110 KIT, oil fill cap (includes 50) 3A6588B... -
Page 23: Parts - Pump 127385
PUMP, oil, 32 oz 127486 KIT, oil seal (includes 17) Kit services 3 cylinders 127487 KIT, packing (includes 43, 44, 51) Kit services 1 cylinder 127488 KIT, piston (includes 33) † Not all repair parts available through Graco. 3A6588B... -
Page 24: Parts - Pump 127383
Kit services 3 cylinders 127496 KIT, piston (includes 90) Kit services 1 cylinder 17Z108 KIT, oil fill cap, vented w/ o-ring (includes 32, † Not all repair parts available through Graco. 17Z114 KIT, valve cap (includes 174) 3A6588B... -
Page 25: Parts - Belt-Drive
Parts - Belt-Drive Parts - Belt-Drive Models 25N679, 25N683, 25N680, 25N684 3A6588B... -
Page 26: Parts List - Belt-Drive
Parts List - Belt-Drive Parts List - Belt-Drive Models 25N679, 25N683, 25N680, 25N684 Ref. Part Description Qty. Ref. Part Description Qty. 16C394 Models 25N683, 25N684, 25N679, 114703 ENGINE, GX390 25N680 PUMP BRACKET, foot 127384 GP - HP series 127541 PAD, foot (Models 25N679, 25N683) 18A003 BELT GUARD, back... -
Page 27: Parts - Pump 127384
127491 KIT, oil seal (includes 16) Kit services 1 cylinder 127492 KIT, packing (includes 44, 47, 56) † Not all repair parts available through Graco. 127493 KIT, piston (includes 35) 17C740 KIT, oil fill cap, vented w/ o-ring (includes 19) -
Page 28: Parts - Pump 127382
127499 KIT, oil seal (includes 98, 106, 121, 127, Kit services 3 cylinders 128) Kit services 1 cylinder 127500 KIT, piston (includes 90) † Not all repair parts available through Graco. 17Z115 KIT, valve, cap (includes 174) 17Z107 SIGHTGLASS (includes 37) -
Page 29: Technical Specifications
Technical Specifications Technical Specifications Model 3325 HA-DD (25N634, 25N638) U.S. Metric Washer Maximum Working Pressure 3300 psi 22.8 MPa, 228bar Honda Engine Size GX200 Gas Tank Capacity 3.8 quarts 3.6 liters Maximum Delivery 2.5 gpm 9.5 lpm Drive Direct Hose 3/8 in. - Page 30 Technical Specifications Model 4240 KA-DD (25N636, 25N640) U.S. Metric Washer Maximum Working Pressure 4200 psi 29.0 MPa, 290 bar Kohler Engine Size CH440 Gas Tank Capacity 7.7 quarts 7.3 liters Maximum Delivery 4.0 gpm 15.1 lpm Drive Direct Hose 3/8 in. x 50 ft 9.5mm x 15.2 m (4200 psi) (29.0 MPa, 290bar)
- Page 31 Technical Specifications Model 4040 HG-DD (25N677, 25N681) U.S. Metric Washer Maximum Working Pressure 4000 psi 27.6 MPa, 276 bar Honda Engine Size GX390 Gas Tank Capacity 6.9 quarts 6.5 liters Maximum Delivery 4 gpm 15.1 lpm Drive Direct Hose 3/8 in. x 50 ft 9.5 mm x 15.2 m (4200 psi) (29.0 MPa, 290 bar)
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Page 32: California Proposition 65
Technical Specifications Model 4040 HG-BD (25N679, 25N683) U.S. Metric Washer Maximum Working Pressure 4000 psi 27.6 MPa, 276 bar Honda Engine Size GX390 Gas Tank Capacity 6.9 quarts 6.5 liters Maximum Delivery 4 gpm 15.1 lpm Drive Belt Hose 3/8 in. x 50 ft 9.5 mm x 15.2 m (4200 psi) (29.0 MPa, 290 bar) -
Page 33: Graco Standard Warranty
With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. - Page 34 Original instructions. This manual contains English. MM 3A6588 Graco Headquarters: Minneapolis International Offices: Belgium, China, Japan, Korea GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA Copyright 2019, Graco Inc. All Graco manufacturing locations are registered to ISO 9001. www.graco.com...
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