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IMPORTANT PRECAUTIONS – Read First!

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.

• 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.

• 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. If you have further questions
regarding the use of recommended clean-
ing detergent, please call Kärcher cus-
tomer service at 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.

• 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.

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.

• 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 pres-
sure washer not be left running for periods of
5 minutes or longer without the trigger gun
being engaged.

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.

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.

Summary of Contents for 1800

Page 1: ...d Clean Up 7 Taking a Break 7 Winterizing and Long Term Storage 7 Cleaning Tips 8 9 Optional Cleaning Accessories 9 Troubleshooting 10 11 Model K 1800 G Part No 1 133 114 0 High Pressure Washer Operator Manual Specifications Operating pressure 1800 PSI Water volume 2 0 GPM Engine 4 0 HP Briggs Stratton Quattro 9 139 086 05 00 800 537 4129 ...

Page 2: ...no pictured NEVER MODEL K 1800 G OVERVIEW Never point nozzle at people or animals Never drink alcohol or use drugs while operating this equipment Never spray electrical connections electrical outlets or fixtures Never add fuel with the engine running or operate where fuel has been spilled Never touch hot surfaces or allow accessories to contact hot surfaces Never operate in an enclosed space exhau...

Page 3: ...ch 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 Water Supply Cold Water Only Water hose must be at least 3 4 inch in diameter Flow ...

Page 4: ...to the handle and fasten the four screws Step 3 Insert the handle into the frame Align holes insert bolt and tighten with knob Step 5 Attach high pressure hose to trigger gun Step 4 Insert the spray wand into the gun Push in and turn clockwise to lock spray wand in place Turn the wand collar clockwise onto the spray wand threads until tight ...

Page 5: ... 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 Step 1 Fill gas tank with unleaded gasoline Do not use leaded gasoline 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 plea...

Page 6: ...imes Step 9 Pull the starter han dle If the engine fails to start after 3 pulls squeeze the trigger gun to release pres sure and repeat step 9 The spray wand allows you to adjust the cleaning pressure To clean at maximum pressure the 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 ...

Page 7: ...sure position to apply detergents Step 3 Fill a container with Kärcher 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 Step 4 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 dr...

Page 8: ... 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 ...

Page 9: ...even sweeping motion keeping the spray nozzle approximately 6 inches from the cleaning surface Caution Do not use rotating nozzle spray wand on siding as it may cause damage Cement Patios Brick and Stone with or without detergent 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 ...

Page 10: ...tion 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 ...

Page 11: ...nd rinse out in warm water Spray wand is in low pressure position Turn spray wand tip to high pres sure position 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 inl...

Page 12: ...washer Insert new washer Spray wand not properly attached Broken o ring or plastic insert 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 Loose fittings Check that all fittings are tight Call service center Water seals are damaged or worn Thermal protection device will automatically reset T...

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