Model K 2300 G
Part No. 1.194-110.0
High Pressure Washer Operator Manual
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
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .10-11
Specifications
Operating pressure 2300 PSI
Water volume
Engine
2.5 GPM
5.0 HP Honda
( 800-537-4129
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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, alkaline, solvents, or
any other flammable material in this prod-
uct. These products can cause physical
injuries to the operator and irreversible
damage to the machine. If you have ques-
tions regarding a chemical product to be
used with this machine, please call
Kärcher Customer Support at
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 pre-
determined high temperature ejecting hot
water before resetting. This ensures that the
pump does not become damaged.
800-537-4129
• 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.
Caution
•
•
Follow the maintenance instructions
specified in the manual.
• Learn how to stop the machine and
release pressure quickly. Be thoroughly
familiar with the controls.
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
• Stay alert — watch what you are doing.
• Do not operate the product when fatigued
or under the influence of alcohol or drugs.
machine and void the warranty.
• 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.
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ASSEMBLY INSTRUCTIONS
Required tools: adjustable pliers.
Step2 Attach the handle
to the frame of the pressure
washer.
Step3 Align holes, insert
bolt, and tighten with knob.
Step1 Attach the front
guard to the frame. Align
holes, insert bolt and tighten
with lock nut.
Step4 Attach the triple jet nozzle to the
spray wand.
Step5 Attach the spray wand to the trig-
ger gun.
Step7 Fill gas tank with
unleaded gasoline.
Do not use leaded gasoline.
Step6 Check oil level. Oil
level should be to the oil filler
neck. Be sure the machine is
level when checking the oil
level. (Refer to the engine’s
operating manual for seasonal
grades.)
Step8 Attach high pres-
sure hose to trigger gun.
Important! Do not run the engine with a high or low oil level as this can cause engine dam-
age. If you have further questions regarding the engine, please refer to the engine’s oper-
ating manual included with the unit.
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OPERATING INSTRUCTIONS
Step1 Connect the high pressure hose to
the unit’s high pressure outlet.
Step2 Connect garden hose to unit’s
water inlet.
Step4 Trigger the gun to eliminate
trapped air, wait for a steady flow of water to
emerge from the spray nozzle.
Step3 Connect garden hose to the cold
water source and turn water on completely.
Step5 Slide the throttle control to the fast
position. Move the choke lever to the
“CHOKE” position (only if the engine is cool).
After starting, move the choke to “RUN”.
Step6 Pull the starter handle. If the
engine fails to start after 3 pulls squeeze the
trigger gun to release pressure, and repeat
step 6.
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USING THE ACCESSORIES
The triple jet nozzle must be positioned to one of the two settings for high pressure cleaning
by turning the the nozzle tip. The pencil jet spray (0º) should be used for stubborn dirt. The
High pressure flat spray (25º) should be used for cleaning over a large surface area. The third
setting on the triple jet nozzle is used for the application of detergents.
High pressure
pencil jet cleaning.
High pressure
fan spray cleaning.
Low Pressure
Detergent application
“CHEM” position.
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 in the “CHEM” setting.
Step2 Fill a container with Kärcher
Step1 Insert the detergent tray to the
mounting bracket and secure it to the frame
by fastening the screw.
detergent. Place the filter end of detergent
suction tube into the container. Be sure to
adjust the filter by turning it to the desired
detergent intake.
For best results see Cleaning Tips
on pages 8 & 9 for specific
information on how to clean
different surfaces.
Always Use Karcher
Detergents for Best Results.
6
Karcher biodegradable detergents are spe-
cially formulated to protect the environment
and your pressure washer. Special formula
won’t clog the suction tube filter and will pro-
tect the internal parts of the pressure washer
for a longer life. For Karcher Detergents,
check your retailer or call:
Step3 To apply detergents the triple jet
nozzle must be set to the “CHEM” position.
1-800-537-4129
The following Karcher detergents are
available:
• 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
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.
• Acid-based products
These chemicals will harm the unit and
will damage the surface being cleaned.
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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.
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
Brick and Stone
(with or without detergent)
(with or without detergent)
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 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.
Pre-rinse cleaning surface with fresh water.
If using Kärcher 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.
Cars, Boats & Motorcycles
(with or without detergent)
Pre-rinse vehicle with fresh water. If using
Kärcher 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. Rinse at high pressure in a sweeping
motion keeping the spray nozzle approxi-
mately 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 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. 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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- continued
CLEANING TIPS
Barbecue Grills, Outdoor
Power Equipment &
Recommendations
• Before cleaning any surface an inconspicu-
ous area should be cleaned to test spray
pattern and distance for maximum cleaning
results.
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 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.
• If painted surfaces are pealing or chipping,
use extreme caution as pressure washer
may remove the loose paint from the
surface.
Use extreme caution when cleaning decks,
siding, and other sensitive surfaces as the
pencil jet may cause damage if not used cor-
rectly.
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.
Rinse at high pressure in a sweeping motion
keeping the spray nozzle approximately 6
inches from the cleaning surface. For best
results, clean from top to bottom and from
left to right.
OPTIONAL CLEANING ACCESSORIES
Optional cleaning accessories are available to further enhance your cleaning capabilities.
Call Kärcher customer service hotline (1-800-537-4129) for details.
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TROUBLESHOOTING
Symptom
Cause
Solution
Engine will not start
No gasoline.
Low oil level.
Fill gas tank.
Add oil.
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.
Nozzle is in “CHEM”
position.
Turn nozzle to high pressure posi-
tion.
Turn water on full force. Check garden
hose for kinks, leaks or blockage.
Output pressure
varies high and low.
Not enough inlet water supply.
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
TROUBLESHOOTING
Symptom
Cause
Solution
Detergent suction tube not
properly connected to the
machine.
No detergent.
Check connection.
Detergent is too thick.
The filter on is closed.
Dilute detergent, for best results
use Kärcher detergent.
Open the filter by turning it to the
desired detergent intake.
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 nozzle is in high
pressure position.
Turn spray nozzle tip to ”CHEM”
position.
Discharge nozzle is
obstructed.
Blow out or remove debris with a
fine needle.
Loose fitting.
Garden hose
Tighten fittings.
connection leaks.
Insert new washer.
Missing/worn rubber washer.
Tighten connections
Nozzle or spray wand not
properly attached.
Triple jet nozzle or
Spray wand leaks.
Call Kärcher customer service
hotline and order o”-ring.
Broken “o”-ring.
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.
Pump is noisy.
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.
Call service center.
Oil seals are damaged or
worn.
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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