Karcher Pressure Washer G 2400 HH User Manual

Part No. 1.194-301  
Model G 2400 HH  
Model K 2400 HH  
Model K 2400 HB  
Model HD 2500 HK  
Part No. 1.194-302  
Part No. 1.194-303  
Part No. 1.194-115  
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  
Model K 2400 HH  
/ G 2400 HH  
Operating pressure 2400 PSI  
Water volume 2.5 GPM  
Engine 5.0 HP Honda GC 160  
Model K 2400 HB  
Operating pressure 2400 PSI  
Water volume  
2.5 GPM  
Engine 5.5 HP Briggs & Stratton  
Model K 2500 HK  
Operating pressure 2500 PSI  
Water volume  
2.5 GPM  
Engine 6.0 HP Kohler Command  
In USA Call:  
1-800-537-4129  
or visit our website:  
Manual Part No. 9.139-106  
 
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 precau-  
tions 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.  
• Operate and fuel machine in a well  
ventilated 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.  
• Wear safety goggles.  
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.  
• Do not use acids, alkaline, solvents, or  
any flammable material in this product.  
These products can cause physical  
injuries to the operator and irreversible  
damage to the machine.  
2
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  
• 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.  
temperature ejecting hot water before  
resetting. This ensures that the pump does  
not become damaged.  
• Do not leave the machine running  
unattended.  
• 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.  
Caution  
Follow the maintenance instructions  
specified in the manual.  
• Do not stand on unstable surfaces. Stand  
with both feet balanced at all times.  
This machine has been designed  
for use with cleaning detergents  
supplied or recommended by  
the manufacturer. The use of other  
cleaning detergents may affect the  
operation of the machine and void  
the warranty.  
• Avoid tipping the machine on its side.  
• The Gun Safety Lock PREVENTS  
the trigger from accidentally being  
engaged. This safety feature DOES  
NOT lock trigger in the on position.  
 
ASSEMBLY INSTRUCTIONS  
Step1 Attach the handle to the frame of Step2  
Attach the gun/hose  
storage handle.  
the pressure washer. Align holes, insert bolts,  
and tighten with knobs.  
3
Step3 Attach the wand  
to the spray gun.  
Step4  
Attach the  
triple jet nozzle.  
Step5  
Attach the high  
pressure hose to the spray  
gun.  
Step6 Connect the high Step7  
Connect the  
garden hose to unit’s water  
inlet.  
Step8  
Attach the  
detergent tray.  
pressure hose to the unit’s  
high pressure outlet.  
(optional, not on G2400 HH)  
 
OPERATING INSTRUCTIONS  
NOTE: Engines controls shown may appear different.  
Step1  
Check oil level. Oil  
level should be level with the  
bottom of 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.) We  
recommend that the oil be  
changed after the first 5 hours  
of use, then once every 50  
hours.  
Step2  
Fill gas tank  
with unleaded gasoline.  
Note: Improper oil levels will cause low oil sensor to shut off engine.  
Do not use leaded gasoline.  
Step3  
Connect  
Step4  
Trigger the gun  
Step5 (Honda)  
Slide  
4
garden hose to the cold  
water source and turn water  
on completely. Never use  
hot water.  
to eliminate trapped air, wait  
for a steady flow of water to  
emerge from the spray nozzle.  
the choke lever out to the  
closed position (on a warm  
engine, leave the choke lever  
in the open position).Slide the  
throttle lever up about 1/3 of  
the way toward the fast  
position.  
Step5 (Briggs & Stratton)  
Turn fuel valve to “ON”. 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”.  
Step5 (Kohler) Turn fuel  
valve to “ON”. 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.  
Important!  
After the engine warms up  
enough to run smoothly,  
move choke to open position  
and throttle to fast position.  
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.  
 
USING THE ACCESSORIES  
The triple jet nozzle must be positioned to one of the two settings for high pressure cleaning  
by turning 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 set-  
ting on the triple jet nozzle is used for the application of detergents.  
High pressure  
pencil jet cleaning.  
High pressure fan  
jet cleaning.  
5
Low pressure Detergent  
application “CHEM”  
position.  
Dirtblaster® nozzle  
This nozzle features a 0º pencil jet which rotates 360º for maximum dirt cutting action,  
effectively increasing cleaning performance up to 50%. This nozzle combines the cleaning  
performance of a 0º pencil jet with the surface coverage of a wide angle nozzle.  
Not recommended for soft materials, siding, painted surfaces, decks or autos.  
WARNING  
TO AVOID SERIOUS INJURY,  
NEVER POINT SPRAY NOZZLE  
AT YOURSELF, OTHER PER-  
SONS OR ANIMALS.  
 
WORKING WITH DETERGENTS  
NOTE: Detergents can only be applied in the “CHEM” setting.  
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.  
Step1  
Use triple jet nozzel (set to  
CHEM. position) to apply detergents  
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:  
Step2  
Adjust the filter end of the  
detergent tube for light (-), or maximum (+)  
detergent coverage.  
6
In USA Call:  
1-800-537-4129  
or visit our website:  
The following Kärcher detergents  
are available:  
• Vehicle Wash  
• Degreaser  
• House Wash  
• Deck Wash  
Step3  
Fill a container with Kärcher  
detergent. Place the filter end of detergent  
suction tube into the detergent.  
• 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.  
 
SHUTTING DOWN & CLEAN-UP  
Step1 Remove de- Step2  
Press  
tergent suction tube from the throttle down to  
container and insert into stop the engine. If  
one gallon of fresh water. the engine has a  
Step3  
Turn  
off water supply.  
Step4  
Press  
trigger to release  
water pressure.  
Siphon water at low  
pressure for one minute.  
fuel valve or swich  
turn off  
7
Step5  
Disconnect the  
garden hose from the water  
inlet on the unit.  
Step6  
Disconnect the  
high pressure hose from the  
high pressure outlet.  
Step7  
Engage the  
gun safety lock.  
TAKING A BREAK... five minutes or more  
Step1 Slide the throttle  
Step2  
Press trigger to  
down to stop the engine. If the release water pressure.  
engine has a fuel valve or  
Step3  
safety lock.  
Engage gun  
switch turn off  
WINTERIZING AND LONG-TERM STORAGE  
1. Disconnect all water connections.  
5. Store the machine and accessories in  
a room which does not reach freezing  
temperatures.  
2. Turn on the machine for a few seconds,  
until the remaining water exits.  
Turn off immediately.  
Caution: Failure to follow the above  
directions will result in damage to the  
pump assembly and accessories.  
3. Drain the gas and oil from the engine.  
4. Do not allow high pressure hose  
to become kinked.  
 
CLEANING TIPS  
Cement Patios,  
Brick and Stone  
(with or without detergent)  
Deck Cleaning  
(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 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.  
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  
pressure. 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  
approximately 3-6 inches from the cleaning  
surface. Always clean from top to bottom  
and from left to right. For removing  
extremely stubborn stains, use Kärcher  
Dirtblaster® Nozzle.  
Caution: Do not use Dirtblaster® nozzle on  
wood surface as it may cause damage.  
Cars, Boats & Motorcycles  
(with or without detergent)  
8
House Siding  
Pre-rinse vehicle with fresh water. If using  
Kärcher Vehicle Wash, 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. 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  
(with or without detergent)  
Pre-rinse cleaning surface with fresh water.  
If using Kärcher House Wash, 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 approximately 6 feet and  
always apply detergent from bottom to top).  
Allow Kärcher 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.  
soft dry cloth.  
Caution: Do not use Dirtblaster® nozzle on  
vehicles as it may cause damage.  
Caution: Do not use Dirtblaster® nozzle on  
siding as it may cause damage.  
 
CLEANING TIPS – continued  
Barbecue Grills, Outdoor Power  
Equipment &  
Patio & Lawn Furniture  
(with or without detergent)  
Gardening Tools  
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 3-6  
inches from the cleaning surface. For best  
results, clean from top to bottom and from  
left to right.  
(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, wheelbarrows or other  
non-sensitive metal surfaces, you may  
want to use the Kärcher Dirtblaster® Nozzle.  
Caution: Do not use Dirtblaster® nozzle  
on patio or lawn furniture as it may cause  
damage.  
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 Dirtblaster® spray nozzle  
on cloth, plastic or other sensitive surfaces  
as it may cause damage.  
9
• If painted surfaces are peeling 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.  
• Dirtblaster® nozzle  
• Hose Reel  
• Extension Wand 80”  
• Rotating Wash Brush  
• Sand Blasting Attachment  
• Pipe Drain Cleaner  
• Extension Hose 30’  
• Detergent Tray  
In USA Call:  
1-800-537-4129  
 
TROUBLESHOOTING  
Disconnect the machine from the power source before making any repair.  
Symptom  
Cause  
Solution  
Engine will not  
start.  
No gasoline.  
Fill gas tank.  
Low oil level sensor activated. Add oil.  
Choke is not in correct position. Slide choke lever out to closed position.  
Engine throttle is not in  
correct position.  
Slide the throttle lever up about 1/3  
of the way toward the fast positon.  
Pressure built up in the  
high pressure washer.  
Squeeze the trigger to  
release the pressure.  
Unit does not reach Diameter of garden hose  
Replace with a 3/4 inch  
garden hose.  
high pressure.  
is too small.  
Water supply is restrict-  
ed.  
Check garden hose for kinks,  
leaks and blockage.  
Not enough inlet water supply. Open water source full force.  
10  
Water inlet filter is  
clogged.  
Remove filter and rinse out  
in warm water.  
Black detergent nozzle is  
attached.  
Remove black detergent nozzle  
and attach a high pressure nozzle.  
Output pressure  
Not enough inlet water  
Turn water on full force. Check garden  
hose for kinks, leaks or blockage.  
varies high and low. 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.  
 
TROUBLESHOOTING – continued  
Symptom  
Cause  
Solution  
No detergent.  
Detergent suction tube  
not properly connected  
to the machine.  
Check connection.  
Detergent is too thick.  
Dilute detergent. For best results,  
use Kärcher detergent.  
Detergent filter valve is  
at lowest setting.  
Set detergent filter valve to a high-  
er setting.  
Filter on detergent suc-  
tion tube is clogged.  
Run warm water through filter to  
remove debris.  
Damaged or clogged  
detergent suction tube.  
Remove obstruction or  
replace detergent suction tube.  
A high pressure  
nozzle is attached.  
Replace with black  
detergent nozzle.  
Discharge nozzle  
is obstructed.  
Blow out or remove debris  
with fine needle.  
Garden hose  
connection leaks.  
Loose fittings.  
Tighten fittings.  
11  
Missing/worn rubber washer. Insert new washer.  
Spray wand leaks.  
Spray wand not properly  
attached.  
Slide the spray wand into the gun.  
Turn the wand collar clockwise onto  
the gun threads until tight.  
Broken o-ring.  
Call Kärcher customer service  
hotline and order an o-ring.  
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.  
Loose fittings.  
Check that all fittings are tight.  
Call service center.  
Water seals are  
damaged or worn.  
Thermal protection  
device is activated.  
Thermal protection  
device will auto reset.  
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  
Kärcher Customer Support USA  
 

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