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PUMP SERVICE: 2525 MODEL  
PRESSURE WASHERS

Repair kits are available. See the Parts List, page 24. 
For the best results, use all parts in kits.

Follow Shutdown Procedure, page 13, to relieve system 
pressure.

•  Drain and refill pump after 25 hours of operation.

For Outlet Valves

1.  Remove  hex  plug  from  the  manifold  using  a  14mm 

wrench.

2.  Examine o-ring located under hex plug. Replace if cut 

or distorted.

3.  Remove  valve  assembly  from  cavity.  The  assembly 

may come apart!

4.  Install new valve, o-ring and hex plug. Torque to 14.75 

ft-lb (20 Nm) 

Note:

 Re-torque the plug after 5 hours operation.

For Inlet Valves

1.  Remove 4 hex bolts from the manifold using a 6mm 

hex bit.

2.  Carefully separate manifold from crankcase. You may 

have to lightly tap the manifold with a soft mallet to 
loosen it.

3.  Using a screwdriver, press valves out of the manifold 

through  the  3  holes  located  on  the  backside  of  the 
manifold (look for the stainless valve seats through the 
holes).

4.   Remove the valve.
5.  Install  new  o-ring.  Then  install  new  valve  assembly. 

Reinsert brass plugs.

6.  Reinstall manifold to pump. Torque hex bolts to 14.75 

ft-lb (20 Nm).

Servicing Plungers or Internal Bearings

1.   Damage to the plungers or any internal parts in the 

pump  housing  is  considered  a  catastrophic  failure 
and is not recommended for service. Replace pump if 
necessary.

Servicing V-Packings

1.  Remove manifold as described in Valve Replacement 

Section.

2.  Remove white retaining ring, this may be stuck on the 

piston.

3.  Remove packing from manifold.
4.  Inspect all parts and replace as necessary.
5.  Thoroughly  clean  packing  cavities  and  inspect  for 

damage.

6.   Lightly grease packing cavities. Replace packings in 

the following order:

• 

packing

• 

retainer ring

NOTICE

Packings must be installed in the proper order and 
facing the correct direction. Improperly installed 
parts will cause the pump to malfunction.

7.   Remove brass retainer located around the piston.
8.  Remove  the  outer  and  inner  o-rings  on  the  brass 

retainer.

9.  Replace o-rings, reinstall brass retainer around piston.
10. Reassemble manifold. Torque hex bolt to 14.75 ft-lb 

(20 Nm).

Summary of Contents for 2525DD

Page 1: ...d instructions in this manual SAVE THESE INSTRUCTIONS PROVEN QUALITY LEADING TECHNOLOGY Model Horse Power and Motor Brand Maximum Working Pressure PSI MPa bar 2525DD 160cc Honda 2500 17 24 172 4 2730D...

Page 2: ...PARK IGNITION SYSTEM COMPLIES WITH CANADIAN ICES 002 CE SYST ME D ALLUMAGE PAR TINCELLE EST CONFORME LA NORME NMB 002 DU CANADA Servicing V Packings 18 Pump Service 2730 Model Pressure Washers 19 Valv...

Page 3: ...t direct discharge stream at persons or pets Only trained operators should use this product When operating this unit basic precautions should always be observed Keep away from the spray Because of the...

Page 4: ...indoors or in a poorly ventilated area Always refuel slowly to avoid the possibility of spilled fuel which may cause a risk of fire Do not operate the unit if gasoline is spilled Wipe unit clean and m...

Page 5: ...s To reduce the risk of injury maintain a safe distance for persons while operating this unit Close supervi sion is necessary when operating the unit near children Do not leave pressurized unit unatte...

Page 6: ...Connect Adapter 5 Water Outlet 6 Decal Warning Caution Operation 7 Oil Sight Glass 8 Pump 9 Adjustable Unloader Knob 10 Decal Caution Risk Of Fire 11 Decal Warning Risk Of Burns 12 Engine 13 Pressure...

Page 7: ...arning Caution 6 Beltguard 7 Decal Operations E S F 8 Pressure Gauge 9 Pump 10 Adjustable Unloader Knob 11 Thermal Relief Valve 12 Water Outlet 13 Water Inlet 14 Water Inlet Quick Connect Adapter 15 B...

Page 8: ...rain snow or freezing temperatures If any part of the unit becomes frozen excessive pressure may build up in the unit which could cause it to burst resulting in possible seri ous injury to the operat...

Page 9: ...g nozzle It deliv ers a very concentrated stream of water Be cautious when using the straight narrow stream It is not recom mended for use on painted or wood surfaces or items attached with adhesive b...

Page 10: ...e other end of the hose to your pressurized water supply Note Do not use a non pressurized water supply i e from a pond or well with this unit 3 Connect the high pressure discharge hose to the water o...

Page 11: ...alve has been added to this unit to protect the pump It may begin to open and release water if the water temperature in the pump has ex ceeded 140 F This will allow fresh cool water to enter the syste...

Page 12: ...n the water supply completely on Pointing the gun in a safe direction unlock the trigger gun and squeeze the trigger Low pressure water will begin flowing from the hose gun assembly This allows the un...

Page 13: ...arts are replaced and that the mechanical problems are corrected prior to operation of the unit If you require service contact Graco Customer Service Inspect high pressure hoses for kinking cuts and l...

Page 14: ...trigger gun and squeeze the trigger In a few moments a detergent water mixture will exit the low pressure nozzle Start spraying the lower portion of the surface being cleaned and move up using long o...

Page 15: ...es as mineral content in the water and number of hours the nozzle is used Quick Couplers There is an o ring seal inside the female quick coupler This o ring will deteriorate or if the unit is allowed...

Page 16: ...endations for the temperature to which you are winterizing Note Proper winterizing is based on the recommend ed manufacturer s instructions listed on the Protec tion Chart shown on the back label of m...

Page 17: ...replace Water is leaking from the Heat Dump Valve Water temperature is too high Do not allow the unit to operate in the bypass mode with trigger gun closed for more than 3 minutes Defective valve Repl...

Page 18: ...the holes 4 Remove the valve 5 Install new o ring Then install new valve assembly Reinsert brass plugs 6 Reinstall manifold to pump Torque hex bolts to 14 75 ft lb 20 Nm Servicing Plungers or Interna...

Page 19: ...crankcase If leaking is obvious replace oil seals Otherwise DO NOT remove these seals because they cannot be reused Oil Seal Kits are available for replacing seals 5 Lightly grease the flinger and oi...

Page 20: ...herwise DO NOT remove these seals because they cannot be reused Oil Seal Kits are available for replacing seals 5 Lightly grease the flinger and oil seal if it is being replaced on plunger shaft Then...

Page 21: ...obvious replace oil seals Otherwise DO NOT remove these seals because they cannot be reused Oil Seal Kit 801473 is available for replacing seals 5 Lightly grease the flinger and oil seal if it is bei...

Page 22: ...22 Pressure Washer Parts 262316 Model 2525DD...

Page 23: ...WHEEL 16E476 2 16 CAP 16E491 2 17 SCREW NIPPLE 16F024 1 18 TEE 16F025 1 19 SCREW COUPLER 16F023 1 DESCRIPTION PART QTY 20 O RING 154771 1 21 ADAPTER 16F032 1 22 BOLT 802127 4 23 WASHER 107194 8 24pDEC...

Page 24: ...24 Pump Assembly Parts Series A 24E735 for use with Model 2525DD...

Page 25: ...NCLUDES 1 KIT REPAIR PLUNGER 24E737 3 INCLUDES 2 KIT REPAIR OIL SEAL 24E738 3 INCLUDES 3 KIT REPAIR UNLOADER 24E739 1 INCLUDES 4 KIT REPAIR PACKINGS 24E740 3 INCLUDES 5 6 7 8 KIT REPAIR CHEMICAL INJEC...

Page 26: ...26 Pump Assembly Parts Series B 24R713 for use with Model 2525DD...

Page 27: ...715 6 INCLUDES 1 THERMAL RELIEF VALVE 117759 1 INCLUDES 2 FILTER INLET 801112 1 INCLUDES 3 KIT REPAIR PACKINGS 24R718 3 INCLUDES 4 KIT REPAIR OIL SEAL 16V292 3 INCLUDES 5 KIT REPAIR PISTION 16V302 3 I...

Page 28: ...28 Pressure Washer Parts 262318 Model 2730DD...

Page 29: ...7194 4 20 BOLT 802127 4 21 WASHER 107194 8 22 ENGINE 16E658 1 23pDECAL RISK OF FIRE N A 1 24pDECAL RISK OF BURNS N A 1 DESCRIPTION PART QTY 25 CHEMICAL HOSE 117760 1 26 HOSE N A 1 27 STRAINER N A 1 28...

Page 30: ...30 Pump Assembly Parts 244749 for use with Model 2730DD...

Page 31: ...T QTY KIT REPAIR VALVES 804402 6 INCLUDES 24 KIT REPAIR OIL SEAL 804033 3 INCLUDES 36 KIT REPAIR PLUNGER 804011 3 INCLUDES 37 KIT REPAIR PACKINGS 804037 3 INCLUDES 32 33 34 35 KIT REPAIR CHEMICAL INJE...

Page 32: ...32 Pressure Washer Parts 262320 Model 3030DD 262322 Model 3540DD...

Page 33: ...6E662 1 16 O RING 154771 1 17 ADAPTER 16F032 1 18 FILTER 801112 1 19 QUICK CONNECT 197428 2 20 RELIEF VALVE 116461 1 21 ELBOW 16F026 1 22 PRESSURE GAUGE 16F027 1 DESCRIPTION PART QTY 23 BOLT 111803 4...

Page 34: ...34 Pump Assembly Parts 24E753 for use with Model 3030DD 24E750 for use with Model 3540DD...

Page 35: ...02 6 INCLUDES 10 KIT REPAIR OIL SEAL 24E744 3 INCLUDES 18 KIT PLUNGER 24E745 3 INCLUDES 22 KIT REPAIR PACKINGS 24E746 3 INCLUDES 11 17 KIT REPAIR PLUNGER 24E747 3 INCLUDES 19 20 21 23 24 KIT REPAIR CH...

Page 36: ...36 Pressure Washer Parts 262326 Model 4043BD...

Page 37: ...1566 2 44 WASHER 100731 3 45 BOLT 100454 1 46 FILTER 16E480 1 47 HOSE BARB 16E483 1 DESCRIPTION PART QTY 48 HEAT DUMP VALVE 116460 1 49 NIPPLE 156849 1 50 HOSE BARB 16E482 1 51 HOSE CLAMP 16E502 2 52...

Page 38: ...38 Pump Assembly Parts 803508 for use with Model 4043BD...

Page 39: ...ION PART QTY KIT REPAIR VALVES 801472 6 INCLUDES 1 KIT REPAIR OIL SEAL 801473 3 INCLUDES 9 KIT PLUNGER 803502 3 INCLUDES 10 KIT REPAIR PLUNGER 803510 3 INCLUDES 11 12 13 KIT REPAIR PACKINGS ONLY 80351...

Page 40: ...40 Notes...

Page 41: ...8 2 kg 142 LB 53 kg 185 LB 69 kg Dimensions Length Width Height 37 94 cm 21 53 cm 24 5 62 cm 30 76 cm 21 53 cm 26 66 cm 34 86 cm 23 5 59 6 cm 25 5 64 7 cm 34 86 cm 23 5 59 6 cm 25 5 64 7 cm 40 94 cm 2...

Page 42: ...including but not limited to incidental or consequential damages for lost profits lost sales injury to person or property or any other incidental or consequential loss shall be available Any action fo...

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