Model K 1800 AB
Model K 2300 ABI
Part No. 1.133-122
Part No. 1.133-212
High Pressure Washer Operator Manual
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
Specification
Model K 1800 AB
Operating pressure 1800 PSI
Water volume
2.0 GPM
Engine 4.0 HP Briggs & Stratton Quantum
Model K 2300 ABI
Operating pressure 2300 PSI
In USA Call:
Water volume
2.2 GPM
1-800-537-4129
or visit our website:
Engine 6.0 HP Briggs & Stratton Intek Edge
Manual Part No. 9.139-222
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IMPORTANT PRECAUTIONS – Read First!
Water Supply
(Cold Water Only)
• 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.
Safety Warnings
When using this product basic
precautions should always be followed:
• Read all the instructions before using the
product.
• 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.
• The water supply temperature must not
exceed 104°F/40°C.
• 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.
• 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.
• 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.
We strongly recommend that this high pres-
sure 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.
This Kärcher high pressure washer is
2
equipped with thermal protection to extend
the life of your pressure washer. The thermal
protector will automatically activate at a pre-
determined high temperature ejecting hot
water before resetting. This ensures that the
pump does not become damaged.
• 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.
• Learn how to stop the machine and
release pressure quickly. Be thoroughly
familiar with the controls.
Caution
•
•
Follow the maintenance instructions
specified in the manual.
• Stay alert — watch what you are doing.
• Do not operate the product when fatigued
or under the influence of alcohol or drugs.
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
• 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.
machine and void the warranty.
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ASSEMBLY INSTRUCTIONS
Step1 Slide the handle through the
accessory rack.
Step2 Align the holes of the accessory
rack to the handle and fasten the four (4) screws.
3
Step3 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.)
Step4 Insert the detergent tray into one
of the slots of your choice and screw in the
fastener. Fill with the proper detergent for
your cleaning project. Place the container on
the tray.
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
Pressure Washer.
Step5 Fill gas tank with unleaded
gasoline. Do not use leaded gasoline.
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OPERATING INSTRUCTIONS
NOTE: Engines controls shown may appear different.
Step1 Connect the high pressure hose to
the unit’s high pressure outlet.
Step2 Connect garden
hose to unit’s water inlet.
4
Step3 Connect garden
hose to the cold water source
and turn water on completely.
Step4 Trigger the gun to eliminate trapped air,
wait for a steady flow of water to emerge from the
spray nozzle.
Step5 Slide the throttle control to the fast
Step6 Pull the starter handle. If the
engine fails to start after 3 pulls squeeze
the trigger gun to release pressure, and
repeat step 7.
position.
Model K 2300 ABI-turn the choke lever to
the “CHOKE” position (only if engine is
cool).After starting, move the choke to
“RUN”.
Model K 1800 AB-push primer ball three
times. Wait 3 seconds between each push.
Note: in cold weather push 5 times
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ASSEMBLE THE GUN
wand collar
Step1 Install spray wand into trigger gun. Push in and turn cockwise to lock spray wand in
place. Turn the wand collar clockwise onto the spray wand threads.
Step2 Attach high pressure hose
to trigger gun.
USING THE ACCESSORIES
5
Vario spray wand
Step1 Insert the Vario spray wand into the gun
Push in and turn clockwise to lock spray wand in place.
Step2 Attach high pressure hose to trigger gun.
For high pressure turn
wand collar in the plus
(+) direction.
For low pressure turn
wand collar in the
minus (-) direction.
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 (-).
WARNING TO AVOID SERIOUS INJURY, NEVER POINT SPRAY
NOZZLE AT YOURSELF, OTHER PERSONS OR ANIMALS
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WORKING WITH DETERGENT
Detergents can only be applied at low pressure (-).
Step1 Install the Vario spray wand and
set the Vario spray wand to the low pressure
setting (-) by turning the wand collar. The
wand must be set in the low pressure
(-) position to apply detergents.
For best results see Cleaning Tips
on pages 8 & 9 for specific informa-
tion on how to clean
different surfaces.
Always Use Kärcher
Detergents for Best Results.
Step2
Adjust the filter end of the
detergent tube for light (-), or maximum (+)
detergent coverage.
Kärcher biodegradable detergents are
specially formulated to protect the
environment and your pressure washer.
The 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 your
retailer or call:
In USA Call:
1-800-537-4129
or visit our website:
The following Kärcher detergents
are available:
Step3 Fill a container with Karcher
detergent. Place the filter end of detergent
suction tube into the container.
• Vehicle Wash
• Degreaser
• House Wash
• Deck Wash
• All Purpose Cleaner
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.
Step4 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
Turn off the water
source.
Step4
Press trigger to
release water
pressure.
detergent suction tube
from container and insert
into one gallon of fresh
water. Siphon water at low
pressure for one minute.
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
engine.
Step2 Press trigger to
release water pressure.
Step3 Engage gun
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 approximately 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 pre-
vious section to eliminate stop marks and
ensure a more even cleaning result.
(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 surface.
Always clean from top to bottom and from
left to right. For removing extremely stub-
born stains, use Kärcher Rotating Nozzle
Spray Wand.
Caution: Do not use rotating nozzle spray
wand on wood surface as it may cause
damage.
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 keep-
ing the spray nozzle approximately 6-8 inch-
es 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 solu-
tion and apply to surface at low pressure
(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 dam-
age.
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 inconspicu-
ous area should be cleaned to test spray
pattern and distance for maximum cleaning
results.
Caution: Do not use rotating nozzle spray
wand on cloth, plastic or other sensitive sur-
faces 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
• Sandblasting Attachment
• Detergent Foamer Attachment
• Water Pumping Kit
• Rotating Spray Wand
• Flexible Spray Wand
• Underbody Spray Wand
• Telescopic Spray Wand
• Water Suction Hose
• Extension Hose 25’
In USA Call:
1-800-537-4129
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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
high pressure.
Diameter of garden hose
is too small.
Replace with a 3/4 inch garden
hose.
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 pres-
sure position.
Output pressure
varies high and low.
Not enough inlet water sup-
ply.
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 wand.
Run distilled vinegar through
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
Loose fitting.
Tighten fittings.
connection leaks.
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
Loose fittings.
Check that all fittings are tight.
Thermal protection device
has been activated.
Thermal protection device will
automatically reset.
is permissible).
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.
In USA Call:
1-800-537-4129
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