K 3.99 M
High Pressure
Washer Operator
Manual
Overview ....................................... 2
IMPORTANT PRECAUTIONS.. 3 - 4
Assembly Instructions .................. 4
Operating Instructions .................. 5
GFCI Instructions ......................... 6
Using the Accessories ................. 6
Working with Detergents ............... 7
Shut Down and Clean-Up .............. 8
Taking a Break .............................. 8
Winterizing andLong-Term
Storage ......................................... 8
Maintenance Instructions ............. 9
Cleaning Tips ......................... 9 - 10
Optional Cleaning Accessories .. 10
Troubleshooting .................... 11 - 12
Specifications
Operating pressure
Water volume
Voltage
1600 PSI
1.6 GPM
120 V
Amp draw
14 AMPS
In USA call:
1-800-537-4129
or visit our website:
Part No. 1.423-235.0
Manual Part No. 5.961-114.0 10/03EN
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IMPORTANT PRECAUTIONS – Read First!
extension cord from the receptacle before
2
Safety Warnings
disconnecting the product from the extension
cord. If you are using an extension cord, it
should always be completely unwound from
the cable drum.
Ground Fault Circuit Interrupter
(GFCI) Protection
This product is supplied with a Ground Fault
Circuit Interrupter (GFCI) built into the power
cord plug. This device provides additional
protection from the risk of electric shock. If
power is interrupted in the line, the GFCI will
automatically re-close the circuit to the load
after power is restored. Depending on the
GFCI model, it may be necessary to manually
operate the reset button to restore power to
the GFCI load circuit. If replacement of the
plug or cord is needed use identical
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,
replacement parts.
or any 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.
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.
•
3
•
•
Keep operating area clear of all persons.
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.
•
•
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 adapter
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
extension cords that are intended for outdoor
use. These extension cords are identified by
the 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
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.
disconnect. Keep cord away from heat and
sharp edges. Always disconnect the
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IMPORTANT PRECAUTIONS – continued
PRECAUTIONS
Water Supply (Cold Water Only)
• The water supply temperature must not
exceed 104°F/40°C.
• Water hose must be at least 3/4 inch in
diameter.
• Never use the pressure washer to draw in
water contaminated with solvents, e.g.
paint thinners, gasoline, oil, etc.
• Always prevent debris from being drawn
into the unit by using a clean water source.
• Flow rate of water supply must not fall
below 2.5 GPM (gallons per minute).
• Flow rate can be determined by running
the water for one minute into an empty“
5-gallon container.
Save these instructions!
ASSEMBLY INSTRUCTIONS
4
Step 1
Step 2
Step 3
Step 4
Pull out the locking slide from the right side of the
trigger gun handle (A), and insert the small end of
the high pressure hose into place (B). Push the
locking slide back into the trigger gun to lock the
hose in position.
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OPERATING INSTRUCTIONS
Step 1
Step 2
Connect the high pressure hose to the high
pressure outlet.
Insert the spray wand of your choice into the
trigger gun. Press in against the spring tension
and twist into the locked position.
5
Step 4
Step 3
Connect garden hose to the cold water
source and turn water on completely.
Connect the garden hose to the water inlet.
Step 5
Step 6
Plug the power cord into the power outlet.
Unlock the lock of the trigger gun (A). Trigger
the gun (B) to eliminate trapped air, wait for a
steady flow of water to emerge from the
spray nozzle.
Turn on the pressure washer (I). The motor
starts only if the trigger of the gun is
pulled and shuts off when the trigger is
released.
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GFCI INSTRUCTIONS
Note:
The actual
appearance
of the GFCI
may be
different
from this
illustration.
Step 1
Step 2
Plug the Ground Fault Circuit Interrupter
(GFCI) into a working outlet
Press “TEST”, then press “RESET” to assure
proper connection to power.
USING THE ACCESSORIES
Vario spray wand
The Vario spray wand allows you to adjust the cleaning pressure. To clean at maximum
pressure, the Vario wand must be positioned to the high pressure setting (+).
To apply detergent, the wand must be positioned to the low pressure setting (–).
For lower
pressure turn
6
wand collar in the
minus (–) direction.
For higher
pressure turn
wand collar in the
plus (+) direction.
Rotating spray wand
Warning
This wand features a 0º pencil jet which
rotates 360º for maximum dirt cutting action,
effectively increasing cleaning performance
up to 50%. This wand combines the cleaning
performance of a 0º pencil jet with the surface
coverage of a wide angle nozzle. Not
TO AVOID SERIOUS INJURY, NEVER
POINT SPRAY NOZZLE AT YOURSELF,
OTHER PERSONS OR ANIMALS
recommended for soft materials, siding,
painted surfaces, decks or autos.
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Working with detergents
Karcher pressure washers operate only at two pressures. The high pressure setting is used for
cleaning, you cannot apply detergents when working at high pressure. To apply detergents you
must be operating at low pressure (–).
For best
results see
Cleaning Tips
on pages 9 & 10
for specific
information on how to
clean different
surfaces.
Always Use Karcher
Detergents for Best Results.
Step 1 Install the Vario spray wand. Set
Karcher biodegradable detergents
the Vario spray wand to the low pressure
are“specially formulated to protect the
setting (–) by turning the wand collar. The
environment and your pressure washer.
wand must be set in the low pressure (–)
Special formula won’t clog the suction tube
position to apply detergents.
filter and will protect the internal parts of the
pressure washer for a longer life. For Karcher
Detergents, check your retailer or call:
7
In USA Call:
1-800-537-4129
or visit our website:
The following Karcher detergents are
available:
One Gallon ready to use
• Vehicle Wash
• All Purpose Cleaner • House Wash
• Deck Wash
---------------------------------------------------
Detergent Concentrate Tablets
(10 Pack; makes 1 1/4 gallon RTU product)
• Degreaser
Step 2 Fill the detergent reservoir with
Kärcher detergent. Place the filter end of
detergent suction tube into the detergent
reservoir
• All Purpose
• Degreaser
• Deck and patio • Windows and Siding
---------------------------------------------------
Caution
Never use:
• Bleach, Chlorine products and other
corrosive chemicals
• Liquids containing solvents
(i.e., paint thinners, gasoline, oils)
• Tri-sodium phosphate products
• Ammonia products
• Acid-based products
These chemicals will harm the unit and will
damage the surface being cleaned.
Step 3 Turn on the pressure washer.
Pull trigger to operate unit: Liquid detergent
is drawn into the unit and mixed with water.
Apply detergent to work area. Do not allow
detergent to dry on surface
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SHUTTING DOWN & CLEAN-UP
Step 2
Step 3
Step 4
Step 1
Turn the switch to off Turn off the water Press trigger to
Remove detergent suction
tube from container and
insert into 1 gallon of fresh
water. Siphon water at low
pressure for one minute.
(O) position and
unplug cord from
outlet.
source.
release water
pressure.
8
Step 5
Step 6
Step 7
Disconnect the garden hose from the Disconnect the high pressure hose Engage the gun
water inlet on the unit.
from the high pressure outlet.
safety lock.
TAKING A BREAK... five minutes or more
Step 1
Step 2
Engage the gun
safety lock.
Turn pressure washer
to off (O) position.
WINTERIZING AND LONG-TERM STORAGE
1. Disconnect all water connections.
4. Store the machine and accessories in
a room which does not reach freezing
temperatures.
Caution: Failure to follow the above
directions will result in damage to the
pump assembly and accessories.
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.
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CARE AND MAINTENANCE INSTRUCTIONS
Maintenance
Theunitismaintenance-free.
Cleaning the water inlet filter
Pulloutthewaterinletfilterwithflat-nose
pliers and rinse out in warm water.
CLEANING TIPS
Deck Cleaning
(with or without detergent)
Cement Patios, Brick and Stone
(with or without detergent)
Pre-rinse deck and surrounding area with
fresh water. If using Kärcher Deck and Patio
Cleaner, place detergent suction tube direct-
ly into cleaning solution and apply to surface
at low pressure. For best results, limit your
work area to smaller sections of approxi-
mately 25 square feet. Allow Kärcher Deck
and Patio Cleaner to remain on surface 1-3
minutes. Do not allow detergent to dry on
surface. Rinse at high pressure in a long
sweeping motion keeping the spray nozzle
approximately 3-6 inches from the cleaning
surface. Always clean from top to bottom
and from left to right. When moving on to a
new section of the cleaning surface, be sure
to overlap the previous section to eliminate
stop marks and ensure a more even clean-
ing result.
Pre-rinse cleaning surface with fresh water.
If using Kärcher Deck and Patio or All
Purpose Cleaner, place detergent suction
tube directly into cleaning solution and apply
to surface at low pressure. For best results,
limit your work area to smaller sections of
approximately 25 square feet. Allow Kärcher
Deck and Patio or All Purpose Cleaner to
remain on surface 1-3 minutes. Do not allow
detergent to dry on surface. Rinse at high
pressure in a sweeping motion keeping the
spray nozzle approximately 3-6 inches from
the cleaning surface. Always clean from top
to bottom and from left to right.
9
Cars, Boats & Motorcycles
(with or without detergent)
Pre-rinse vehicle with fresh water. If using
Kärcher Vehicle or All Purpose Cleaner,
place detergent suction tube directly into
cleaning solution and apply to surface at low
pressure. For best results, clean one side of
vehicle at a time and always apply detergent
from bottom to top, do not allow detergent to
dry on surface. If needed, use special Wash
Brush Attachment to remove stubborn dirt.
Rinse at high pressure in a sweeping motion
keeping the spray nozzle approxi-mately 6-8
inches from the cleaning surface (distance
should increase when rinsing pin-striping or
other sensitive surfaces). Always clean from
top to bottom and from left to right. For best
results, wipe surface dry with a chamois or
soft dry cloth.
House Siding
(with or without detergent)
Pre-rinse cleaning surface with fresh water.
If using Kärcher House or Window and
Siding Cleaner, place detergent suction tube
directly into cleaning solution and apply to
surface at low pressure (for best results,
limit your work area to sections of approxi-
mately 6 feet and always apply detergent
from bottom to top). Allow Kärcher House or
Window and Siding Cleaner to remain on
surface 1-3 minutes. Do not allow detergent
to dry on surface, if surface appears to be
drying, simply wet down surface with fresh
water. If needed, use special Wash Brush
Attachment to remove stubborn dirt. Rinse
at high pressure from top to bottom in an
even sweeping motion keeping the spray
nozzle approximately 6 inches from the
cleaning surface.
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CLEANING TIPS – continued
Barbecue Grills, Outdoor Power
Equipment & Gardening Tools
(with or without detergent)
Patio & Lawn Furniture
(with or without detergent)
Pre-rinse furniture and surrounding area
with fresh water. If using Kärcher All
Purpose Cleaner, place detergent suction
tube directly into cleaning solution and apply
to surface at low pressure. Allow Kärcher All
Purpose Cleaner to remain on surface 1-3
minutes. Do not allow detergent to dry on
surface. If needed use special Wash Brush
Attachment to remove stubborn dirt. Rinse
at high pressure in a sweeping motion
keeping the spray nozzle approximately 3-6
inches from the cleaning surface. For best
results, clean from top to bottom and from
left to right.
Pre-rinse cleaning surface with fresh water.
If using Kärcher All Purpose Cleaner or
Degreaser, place detergent suction tube
directly into cleaning solution and apply
detergent at low pressure. Allow Kärcher
detergent to remain on surface 1-3 minutes.
Do not allow detergent to dry on surface.
Rinse at high pressure keeping the spray
nozzle approximately 3-6 inches from the
cleaning surface. For removing extremely
stubborn dirt, it may be necessary to move
the spray nozzle even closer to the surface
for greater dirt cutting action. To remove
caked on mud from garbage cans, lawn
mower blades, wheel barrels or other
non-sensitive metal surfaces, you may
want to experiment with different settings on
the Quattro Nozzle.
Recommendations
• Before cleaning any surface an inconspic-
uous area should be cleaned to test spray
pattern and distance for maximum clean-
ing results.
• If painted surfaces are pealing or
chipping, use extreme caution as
pressure washer may remove the loose
paint from the surface.
10
• While using on surfaces which might
come in contact with food. Flush surfaces
with plenty of drinking water.
OPTIONAL CLEANING ACCESSORIES
Optional cleaning accessories are available to further enhance your cleaning capabilities:
See accessories order form for product descriptions and ordering instructions.
• Vario Spray Wand
• House Washing Wand
• Wet Sandblasting Attachment
• Pipe Drain Cleaner
• Extension Wand, 20 inches
• Flexible Spray Wand
• Water Suction Hose With Filter
• Extension Hose 25’
• Underbody Spray Wand
• 4 Piece Extension Wand, 66 inches
• Rotating Wash Brush
• K12 Surface Cleaner
In USA call:
1-800-537-4129
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TROUBLESHOOTING
Disconnect the machine from the power source before making any repair.
Symptom
Cause
Solution
Motor will not start
On/Off switch is in the “OFF” (O)
position.
Turn switch to the “ON” (I) position
Power cord is not plugged in.
Extension cord is too long.
Plug in power cord.
Replace extension cord with either
Extension cord is not proper gauge. “a 25 ft. 12/3 gauge cord or a 50
Extension cord is damaged.
ft. 10/3 gauge cord.
Electrical outlet does not supply
adequate power.
Try a different outlet.
Tripped circuit breaker
Reset breaker (power supply) or
ground fault circuit interrupter.
Unit does not reach high
pressure.
Diameter of garden hose is too
small.
Replace with a 3/4 inch garden
hose.
Check garden hose for kinks, leaks
and blockage.
Water supply is restricted.
Not enough inlet water supply.
Water inlet filter is clogged.
11
Open water source full force.
Remove filter and rinse out in
warm water.
Spray wand is in low pressure
position.
Turn spray wand to high pressure
position.
Output pressure varies high
and low.
Not enough inlet water supply.
Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
Pump is sucking air.
Check that hoses and fittings are
air tight. Turn off machine and
purge pump by squeezing trigger
gun until “a steady flow of water
emerges through the nozzle.
Water inlet filter is clogged.
Remove filter and rinse out in
warm water.
Discharge nozzle is obstructed.
Calcified gun, hose or spray wand.
Blow out or remove debris with a
“fine needle.
Run distilled vinegar through
“detergent suction tube.
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TROUBLESHOOTING – continued
Symptom
Cause
Solution
No detergent.
Detergent suction tube not properly Check connection.
connected to the machine.
Detergent is too thick.
Dilute detergent, for best results
use Kärcher detergent.
Filter on detergent suction tube is
clogged.
Run warm water through filter to
remove debris.
Damaged or clogged detergent
suction tube.
Remove obstruction or replace
detergent suction tube.
Spray wand is in high“pressure
position.
Turn spray wand tip to low
pressure position.
Discharge nozzle is obstructed.
Blow out or remove debris with
fine needle.
Garden hose
Loose fittings.
Tighten fittings.
connection leaks.
Missing/worn rubber washer.
Insert new washer.
12
Spray wand leaks.
Spray wand not properly attached. Insert the spray wand into the
trigger gun. Carefully press in
against the spring tension and twist
into the locked position.
Broken o-ring or plastic insert.
Pump is sucking air.
Call Kärcher customer service
“hotline and order repair kit “(part
no. 2.883-111.0).
Pump is noisy.
Check that hoses and fittings are
air tight. Turn off machine and
purge pump by squeezing trigger
gun until “a steady flow of water
emerges through the nozzle.
Water leaks from pump (up
to 10 drops per minute is
permissible).
Loose fittings.
Check that all fittings are tight.
Water seals are damaged or worn. Call service center.
Oil seals are damaged or worn.
Call service center.
Oil Drip.
If you encounter any additional
difficulties not listed, please call our
service center for help.
In USA Call:
1-800-537-4129
Karcher Customer Support USA
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