Model K 4400 G
Part No. 1.133-208.0
High Pressure Washer
Table of Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . .3
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . .4
Using the Accessories . . . . . . . . . . . . . . . . . . . . . . . .5
Working with Detergents . . . . . . . . . . . . . . . . . . . . . . .6
Shut Down and Clean-Up . . . . . . . . . . . . . . . . . . . . . .7
Taking a Break . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Winterizing and Long-Term Storage . . . . . . . . . . . . . .7
Cleaning Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9
Optional Cleaning Accessories . . . . . . . . . . . . . . . . . .9
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . .10-11
Model K 4000 G
Operating pressure
Water volume
Engine
2000 PSI
2.2 GPM
6.0 HP Briggs & Stratton Quantom
Operator
Manual
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IMPORTANT PRECAUTIONS – Read First!
Water Supply
Safety Warnings
(Cold Water Only)
When using this product basic
precautions should always be followed:
• Read all the instructions before using the
product.
• Water hose must be at least 3/4 inch in
diameter.
• 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.
• FIRE HAZARD! Do not add fuel with the
engine running. Do not operate if fuel has
been spilled. Instead move the machine
to a different location and avoid creating
sparks.
• Operate and fuel machine in a well venti-
lated area, free of devices featuring an
open pilot or flame such as boilers, water
heaters, etc.
• 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.
• The water supply temperature must not
exceed 104°F/40°C.
• 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.
We strongly recommend that this high
pressure washer not be left running for
periods of 5 minutes or longer without
the trigger gun being engaged.
• 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.
• The machine has hot surfaces which can
cause burns. Operate the unit in a safe
environment and away from children.
• Do not allow the high pressure hose to
come into contact with the muffler guard.
• Do not leave the machine running
unattended.
This Kärcher high pressure washer is
equipped with thermal protection to
extend the life of your pressure washer.
The thermal protector will automatically
activate at a predetermined high temper-
ature ejecting hot water before resetting.
This ensures that the pump does not
become damaged.
2
• Learn how to stop the machine and
release pressure quickly. Be thoroughly
familiar with the controls.
• Stay alert — watch what you are doing.
• 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.
• The Gun Safety Lock PREVENTS the
trigger from accidentally being engaged.
This safety feature DOES NOT lock trigger
in the on position.
Caution
•
•
Follow the maintenance instruc-
tions 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.
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ASSEMBLY INSTRUCTIONS
No tools required.
Step1 Attach the handle to the frame of
the pressure washer. Align holes, insert bolt,
add lock washer and tighten with knob.
Step2 Check oil level. Oil level should
always be between the “FULL” and “ADD”
marks on the dipstick. Be sure the machine is
level when checking the oil level. (Refer to the
engine’s operating manual for seasonal
grades.)
3
Important! Do not run the engine
with a high or low oil level as this can
cause engine damage. If you have
further questions regarding the engine,
please refer to the engine’s operating
manual included with the unit.
You are now ready
to operate your
Karcher 4000 G
Pressure Washer.
Step3 Fill gas tank with unleaded
gasoline. Do not use leaded gasoline.
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OPERATING INSTRUCTIONS
Step1 Connect the high pressure hose to
Step2 Insert the Vario spray wand
into the gun. Push in and turn clock-
wise to lock spray wand in place.
the unit’s high pressure outlet.
4
Step3 Connect
garden hose to unit’s
water inlet.
Step4 Connect
garden hose to the
cold water source
and turn water on
completely.
Step5 Trigger the gun to
eliminate trapped air, wait for a
steady flow of water to emerge
from the spray nozzle.
Step6 Slide the throttle control to the fast
position. Move the choke lever to the “CHOKE”
position (only if engine is cool). After starting,
move the choke to “RUN”.
Step7 Pull the starter handle. If
the engine fails to start after 3 pulls
squeeze the trigger gun to release
pressure, and repeat step 7.
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USING THE ACCESSORIES
Vario spray wand
The Vario spray wand allows you to adjust the cleaning pressure. To clean at maximum pres-
sure, 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 high pressure turn
wand collar in the plus
(+) direction.
For low pressure turn
wand collar in the
minus (-) direction.
WARNING TO AVOID SERIOUS
INJURY, NEVER POINT SPRAY
NOZZLE AT YOURSELF, OTHER
PERSONS OR ANIMALS
5
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WORKING WITH DETERGENT
Detergents can only be applied at low pressure (-).
For best results see Cleaning
Tips on pages 8 & 9 for specific
information on how to clean
different surfaces.
Step1 Install the Vario spray wand and
set the Vario spray wand to the low pres-
sure setting (-) by turning the wand collar.
The wand must be set in the low pressure
(-) position to apply detergents.
Always Use Karcher
Detergents for Best Results.
Karcher biodegradable detergents are
specially formulated to protect the environ-
ment 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
Karcher Detergents, check your retailer
or call:
6
1-800-537-4129
The following Karcher detergents are
available:
• Vehicle Wash
• Degreaser
• All Purpose Cleaner
• House Wash
• Deck Wash
Step2 Fill a container with Karcher
detergent. Place the filter end of detergent
suction tube into the container.
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.
Step3 With the engine running, 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
Step1 Remove
Step2
Turn off the
engine.
Step3
Step4
detergent suction tube
from container and insert
into one gallon of fresh
water. Siphon water at low
pressure for one minute.
Turn off the water
source.
Press trigger to
release water
pressure.
7
Step5 Disconnect
the garden hose from the
water inlet on the unit.
Step6 Disconnect the high pressure hose from the
high pressure outlet and engage the gun safety lock.
TAKING A BREAK... five minutes or more
Step1 Turn off the
Step2 Press trigger
Step3 Engage gun
engine.
to release water pressure.
safety lock.
WINTERIZING AND LONG-TERM STORAGE
1. Disconnect all water connections.
2. Start the machine for a few seconds,
until the water which had remained in the
pump exits. Turn off immediately.
3. Drain the gas and oil from the engine.
4. Do not allow high pressure hose to
become kinked.
5. Store the machine and accessories in
a room which does not reach freezing
temperatures. The machine should not be
placed near an open flame i.e. furnace,
hot water heater etc.
Caution: Failure to follow the above direc-
tions will result in damage to the pump
assembly and accessories.
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CLEANING TIPS
Cement Patios,
Deck Cleaning
(with or without detergent)
Brick and Stone
Pre-rinse deck and surrounding area with
fresh water. If using Kärcher Deck Wash,
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 approxi-
mately 25 square feet. Allow Kärcher Deck
Wash 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 cleaning result.
Caution: Do not use rotating nozzle
spray wand on wood surface as it may
cause damage.
(with or without detergent)
Pre-rinse cleaning surface with fresh water.
If using Karcher All Purpose Cleaner, place
detergent suction tube directly into cleaning
solution and apply to surface at low pres-
sure. For best results, limit your work area
to smaller sections of approximately 25
square feet. Allow Kärcher 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 approxi-
mately 3-6 inches from the cleaning sur-
face. Always clean from top to bottom and
from left to right. For removing extremely
stubborn stains, use Kärcher Rotating
Nozzle Spray Wand.
Cars, Boats & Motorcycles
(with or without detergent)
Pre-rinse vehicle with fresh water. If using
Karcher Vehicle Wash, place detergent suc-
tion 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 sur-
face. If needed, use special Wash Brush
Attachment to remove stubborn dirt. Rinse
at high pressure in a sweeping motion
keeping the spray nozzle approximately 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.
8
House Siding
(with or without detergent)
Pre-rinse cleaning surface with fresh water.
If using Kärcher House Wash, place deter-
gent suction tube directly into cleaning
solution and apply to surface at low pres-
sure (for best results, limit your work area
to sections of approximately 6 feet and
always apply detergent from bottom to top).
Allow Karcher House Wash 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.
Caution: Do not use rotating nozzle
spray wand on vehicles as it may
cause damage.
Caution: Do not use rotating nozzle
spray wand on siding as it may cause
damage.
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- continued
CLEANING TIPS
Barbecue Grills, Outdoor
Power Equipment &
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 direct-
ly 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 pres-
sure 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.
Caution: Do not use rotating nozzle spray
wand on patio or lawn furniture as it may
cause damage.
Gardening Tools
(with or without detergent)
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 use the Karcher Rotating Nozzle
Spray Wand.
Recommendations
• Before cleaning any surface an inconspic-
uous area should be cleaned to test spray
pattern and distance for maximum clean-
ing results.
Caution: Do not use rotating nozzle spray
wand on cloth, plastic or other sensitive
surfaces as it may cause damage.
9
• If painted surfaces are pealing or chipping,
use extreme caution as pressure washer
may remove the loose paint from the
surface.
OPTIONAL CLEANING ACCESSORIES
Optional cleaning accessories are available to further enhance your cleaning capabilities:
See accessories order form for product descriptions and ordering instructions.
• Rotating Wash Brush
• Wash Brush
• Pipe Drain Cleaner
• Floor Washing Tool
• House Washing Wand
• Extension Wand
• Rotating Spray Wand
• Flexible Spray Wand
• Underbody Spray Wand
• Telescopic Spray Wand
• Sandblasting Attachment
• Detergent Foamer Attachment
• Water Pumping Kit
• Water Suction Hose
• Extension Hose 25’
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TROUBLE SHOOTING
Symptom
Cause
Solution
Fill gas tank.
Add oil.
Engine will not
start
No gasoline.
Low oil level.
Slide choke lever to “CHOKE”
position.
Choke is not in correct
position.
Engine throttle is not in
correct position.
Position the throttle to “FAST”.
For additional
engine problems
refer to the engine
owners manual.
Pressure built up in the
high pressure washer.
Squeeze the trigger to release the
pressure.
Unit does not reach Diameter of garden hose is
Replace with a 3/4 inch garden
hose.
high pressure.
too small.
Water supply is restricted.
Check garden hose for kinks, leaks
and blockage.
Not enough inlet water supply. Open water source full force.
Water inlet filter is clogged.
Remove filter and rinse out in warm
water.
10
Spray wand is in low
pressure position.
Turn spray wand tip 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.
Blow out or remove debris with a
fine needle.
Calcified gun, hose or spray Run distilled vinegar through
wand. detergent suction tube.
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- continued
TROUBLE SHOOTING
Symptom
Cause
Solution
Detergent suction tube not
properly connected to the
machine.
No detergent.
Check connection.
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 a
fine needle.
Garden hose
connection leaks.
Loose fitting.
Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Insert the spray wand into the trigger
Spray wand not properly
attached.
Spray wand leaks.
gun. Carefully press in against the
spring tension and twist into the
locked position.
11
Call Kärcher customer service
hotline and order repair kit
(part no. 2.883-111.0).
Broken o-ring or plastic
insert.
Pump is noisy.
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 leaks from
pump (up to 10
drops per minute
is permissible).
Loose fittings.
Check that all fittings are tight.
Thermal protection device
has been activated.
Thermal protection device will
automatically reset.
Water seals are damaged
or worn.
Call service center.
Oil Drip.
Oil seals are damaged or
worn.
Call service center.
If you encounter any additional
difficulties not listed, please call
our service center for help.
Karcher Customer Support USA
1-800-537-4129
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