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IMPORTANT PRECAUTIONS – 

Read First!

Caution

• Follow the maintenance instructions

specified in the manual.

• This machine has been designed for use

with cleaning detergent supplied
or recommended by the manufacturer.
The use of other cleaning detergents may
affect the operation of the machine and
void the warranty.

GROUNDING INSTRUCTIONS

This product must be grounded. If it should
malfunction or breakdown, grounding provides
a path of least resistance for electric current to
reduce the risk of electric shock. This product
is equipped with a cord having an equipment-
grounding conductor and a grounding plug. The
plug must be plugged into an appropriate outlet
that is properly installed and grounded in
accordance with all local codes and ordinances.

DANGER  –  Improper connection of the
equipment-grounding conductor can result in
a risk of electrocution. Check with a qualified
electrician or service personnel if you are in
doubt as to whether the outlet is properly
grounded. Do not modify the plug provided with
the product – If it will not fit the outlet, have a
proper outlet installed by a qualified electrician.
Do not use any type of adaptor with this product.

Extension Cords

Use a sufficient gauge:

Up to 25 ft = 12/3 AWG
25 to 50 ft = 10/3 AWG

Use only 3-wire extension cords that have 3-
prong grounding-type plugs and 3-pole cord
connectors that accept the plug from the
product. Use only extension cords that are
intended for outdoor use. These extension
cords are identified by a marking “Acceptable
for use with outdoor appliances; store indoors
while not in use.” Use only extension cords
having an electrical rating not less than the
rating of the product. Do not use damaged
extension cords. Examine extension cord before
using and replace if damaged. Do not abuse
extension cord and do not yank on any cord to
disconnect. Keep cord away from heat and
sharp edges. Always disconnect the extension
cord from the receptacle before disconnecting
the product from the extension cord.

       Safety Warnings

When using this product basic precautions
should always be followed:

• Read all the instructions before using the

product.

• High pressure jets can be dangerous if subject

to misuse. The jet must not be directed at
persons, animals, electrical devices, or the
machine itself.

• To reduce the risk of injury, do not operate the

machine near children.

• Learn how to stop the machine and release

pressure quickly. Be thoroughly familiar with
the controls.

• Stay alert — watch what you are doing.
• Wear safety goggles.
• Do not use acids, solvents, or any other

flammable material in this product. These
products can cause physical injuries to the
operator and irreversible damage to the
machine.

• Do not operate the product when fatigued or

under the influence of alcohol or drugs.

• Do not stand on unstable surfaces. Stand with

both feet balanced at all times.

• To reduce the risk of electrocution, keep all

connections dry and off the ground. Do not
touch plug with wet hands.

• The Trigger Gun Safety Lock PREVENTS the

trigger from accidentally being engaged. This
safety feature DOES NOT lock trigger in the
on position.

WARNING

• DO NOT USE WITH FLAMMABLE LIQUIDS

AND TOXIC CHEMICALS.

• INJECTION HAZARD: EQUIPMENT CAN

CAUSE SERIOUS INJURY IF THE SPRAY
PENETRATES THE SKIN. DO NOT POINT
THE GUN AT ANYONE OR ANY PART OF
THE BODY. IN CASE OF PENETRATION
SEEK MEDICAL AID IMMEDIATELY.

• THIS SYSTEM IS CAPABLE OF PRODUCING

1150 PSI. TO AVOID RUPTURE AND
INJURY, DO NOT OPERATE THIS PUMP
WITH COMPONENTS RATED LESS THAN
1150 PSI WORKING PRESSURE
(INCLUDING BUT NOT LIMITED TO SPRAY
GUNS, HOSE AND HOSE CONNECTIONS).

• BEFORE SERVICING, CLEANING OR RE-

MOVAL OF ANY PARTS, SHUT OFF POWER
AND RELIEVE PRESSURE.

• DO NOT SPRAY ELECTRICAL APPARATUS

AND WIRING.

• IF CONNECTION IS MADE TO A POTABLE

WATER SYSTEM, THE SYSTEM SHALL BE
PROTECTED AGAINST BACKFLOW.

Summary of Contents for HD 425

Page 1: ... Up 8 Taking a Break 8 Winterizing and Long Term Storage 8 Optional Cleaning Accessories 9 Troubleshooting 11 12 Specifications Max Pressure 1150 PSI Max Water Volume 1 8 GPM Voltage 120 V Amp Draw 13 AMPS 5 960 859 2005435 04 03 Please keep the original box packaging and receipt Before operating this unit please read this manual thoroughly and retain it for future reference HD 425 ...

Page 2: ...rugs while operating this equipment Never operate while standing in water Never touch plug with wet hands Never let electrical connections rest in water Never operate pressure washer without the water turned on Never use hot water NEVER THE BEST ANTI FREEZE PROTECTION IS PROVIDED BY USING AND STORING THE MACHINE IN SHELTERED SPACE 6 Spray wand 7 Triple jet nozzle 8 High pressure hose 9 Water inlet...

Page 3: ...ank on any cord to disconnect Keep cord away from heat and sharp edges Always disconnect the extension cord from the receptacle before disconnecting the product from the extension cord Safety Warnings When using this product basic precautions should always be followed Read all the instructions before using the product High pressure jets can be dangerous if subject to misuse The jet must not be dir...

Page 4: ... using a clean water source and an accessory water filter if required Water Supply Cold Water Only Water hose must be at least a 1 2 inch or 5 8 inch in diameter Flow rate of water supply must not fall below 2 GPM gallons per minute Flow rate can be determined by running the water for one minute into an empty 5 gallon container The water supply temperature must not exceed 104 F 40 C Step 1 Attach ...

Page 5: ...rn water on completely Step 4 Plug the power cord into the power outlet Unlock the lock of the trigger gun Step 6 Turn on the pressure washer ON NOTE This unit is equipped with a pressure switch The motor only starts up when the trigger on the gun is pulled The motor shuts off when the trigger is released Step 5 Trigger the gun to eliminate trapped air wait for a steady flow of water to emerge fro...

Page 6: ...dirt The High pressure flat spray 25 should be used for cleaning over a large surface area The third setting on the triple nozzle is used for the application of detergents Triple Jet Nozzle Warning TO AVOID SERIOUS INJURY NEVER POINT SPRAY NOZZLE AT YOURSELF OTHER PERSONS OR ANIMALS High pressure pencil jet cleaning High pressure fan jet cleaning Low pressure Detergent application CHEM position ...

Page 7: ...jug Step 1 Use triple nozzle set to CHEM position to apply detergents Always Use Kärcher Detergents for Best Results Kärcher biodegradable detergents are specially formulated to protect the environment and your pressure washer Special formula won t clog the suction tube filter and will protect the internal parts of the pressure washer for a longer life For Kärcher Detergents check with your dealer...

Page 8: ... 5 Disconnect the garden hose from the water inlet on the unit Step 1 Engage gun safety lock Step 2 Turn pressure washer to off OFF position 1 Disconnect all water connections 2 Turn on the machine for a few seconds until the water which had remained in the pump exits Turn off immediately 3 Do not allow high pressure hose to become kinked WINTERIZING AND LONG TERM STORAGE 4 Store the machine and a...

Page 9: ...mages nor does it cover repairs made or attempted by unauthorized persons Wearitemssuchasnozzle hose spray wands and other accessories are warranted for 3 months Please note that no returns will be accepted without prior authorization from our customer service department It is the owner s responsibility to file claims for damage caused by public transportation carriers directly with the carrier co...

Page 10: ...t filter is clogged Discharge nozzle is obstructed Calcified gun hose or power nozzle Solution Turn switch to the ON position Plug in power cord Replace extension cord with either a 25 ft 12 2 gauge cord or a 50 ft 10 2 gauge cord Try a different outlet Replace with a 1 2 inch or 5 8 inch garden hose Check garden hose for kinks leaks and blockage Open water source full force Remove filter and rins...

Page 11: ... that all fittings are tight Call Customer Service Call Customer Service Symptom No detergent Garden hose connection leaks Spray wand leaks Pump is noisy Water leaks from pump up to 10 drops per minute is permissible Oil Drip Cause Detergent is too thick Filter on detergent suction tube is clogged Damaged or clogged detergent suction tube Triple nozzle is in high pressure position Discharge nozzle...

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