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13- ENG

A09741

MAINTENANCE

When performing 

maintenance, you 

may be exposed to hot surfaces, 

water pressure, or moving parts 

that can cause serious injury or 

death!
Before performing any maintenance 

or repair, disconnect spark plug 

wire, let engine cool and release 

all water pressure. The engine 

contains flammable fuel.  DO NOT 

smoke or work near open flames 

while performing maintenance.

To ensure efficient operation and 

longer life of your pressure washer, 

a routine maintenance schedule 

should be prepared and followed. 

If the pressure washer is used in 

unusual conditions, such as high-

temperatures or dusty conditions, 

more frequent maintenance checks 

will be required.

ENGINE

Consult the Engine Owners 

Manual for the manufacturer's 

recommendations for any and all 

maintenance. 

NOTE:

 The frame is 

equipped with an oil drain hole to help 

make changing the engine oil easier.

PUMP

The oil in the high pressure pump was 

designed to last the life of the pump. 

If there is a problem with the pump 

contact an Authorized Service Center.

NOZZLE CLEANING

If the nozzle becomes clogged 

with foreign materials, such as dirt, 

excessive pressure may develop.  If 

the nozzle becomes partially clogged 

or restricted, the pump pressure will 

pulsate.  Clean the nozzle immediately 

using the nozzle kit supplied and the 

following instructions:

1. 

Shut off the pressure washer and 

turn off the water supply.

2. 

Pull trigger on gun handle to 

relieve any water pressure.

3.

  Disconnect the spray wand from 

the gun.

4.

  Remove the high-pressure nozzle 

from the spray wand. Remove 

any obstructions with the nozzle 

cleaning tool provided and 

backflush with clean water.

5.

  Direct water supply into spray 

wand to backflush loosened 

particles for 30 seconds.

6.

  Reassemble the nozzle to the 

wand. 

7.

  Reconnect spray wand to gun 

and turn on water supply.

8.

  Start pressure washer and place 

spray wand into high pressure 

setting to test.

Summary of Contents for D2750H

Page 1: ...chinery ESPA OL P GINA 19 FRAN AIS PAGE 37 To learn more about DELTA MACHINERY visit our website at www deltamachinery com For Parts Service Warranty or other Assistance please call 1 866 422 4286 6 H...

Page 2: ...other similar items then an approved spark arrester must be installed and is legally required in the state of California It is a violation of California statutes section 130050 and or sections 4442 an...

Page 3: ...a location occupied by humans or animals Some cleaning fluids contain substances which could cause injury to skin eyes or lungs Use only cleaning uids speci cally recom mended for high pressure washe...

Page 4: ...re washers Wear protective clothing to protect eyes and skin from contact with sprayed materials Use of acids toxic or corrosive chemicals poisons insecticides or any kind of ammable solvent with this...

Page 5: ...HOW TO PREVENT IT Unsafe operation of your pressure washer could lead to serious injury or death to you or others Do not use chlorine bleach or any other corrosive compound Become familiar with the o...

Page 6: ...e Frame and Wheel Assembly High Pressure Hose Spray Gun Quick Connect Spray Wand Handle Chemical Hose Bagged Parts Nozzle Cleaning Tool Engine Manual Operation Manual Registration card Engine Oil Grom...

Page 7: ...ommet NOTE Nozzles are color coded to match colored nozzles on panel NOTE The high pressure pump was lled with oil at the factory The oil in the high pressure pump was designed to last the life of the...

Page 8: ...ction Chemical Hose not shown Feeds cleaning agents into the pump to mix with the water See How To Apply Chemicals Cleaning Solvents instructions in this section Compare the illustrations with your un...

Page 9: ...wise DO NOT try to turn pressure regulator knob past the built in stop or damage to pump will result Pressure Regulator Knob PRESSURE WASHER TERMINOLOGY PSI Pounds per Square Inch The unit of measure...

Page 10: ...tely Fill tank to 1 2 below bottom of ller neck to provide space for fuel expansion Wipe any fuel spillage from engine and equipment before starting engine NEVER run engine indoors or in enclosed poor...

Page 11: ...r through chemical injection system to rinse system thoroughly If chemicals remain in the pump it could be damaged Pumps damaged due to chemicals will not be covered under warranty NOTE Chemicals and...

Page 12: ...p 8 Start engine See Engine Owners Manual for correct procedure NOTE When engine rope is pulled pressure starts building in the gun If the engine does not start after two pulls pull the gun trigger to...

Page 13: ...ing the engine oil easier PUMP The oil in the high pressure pump was designed to last the life of the pump If there is a problem with the pump contact an Authorized Service Center NOZZLE CLEANING If t...

Page 14: ...from water inlet of pump as shown 2 Clean lter by ushing it with water on both sides 3 Re insert lter into water inlet of pump NOTE Cone side faces out NOTE Do not operate pressure washer without lter...

Page 15: ...y also be used PUMP The manufacturer recommends using a pump protector winterizer when storing the unit for more than 30 days and or when freezing temperatures are expected If a pump protector winteri...

Page 16: ...enance section Water filter screen clogged Remove and clean filter Air in hose Turn off the engine then the water source Disconnect the water source from the pump inlet and turn the water source on to...

Page 17: ...C Check and replace Loose hose connection Loose connections Tighten Piston packings worn Have replaced by AWSC Worn or broken o rings Have replaced by AWSC Pump head or tubes damaged from freezing Hav...

Page 18: ...on tanks will be inspected at the site of installation Contact the nearest Delta Authorized Warranty Service Center that provides on site service calls for service call arrangements If the purchaser d...

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