Karcher K 3.740 User Manual

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K 3.740

HIGH PRESSURE WASHER - OPERATOR MANUAL NETTOYEUR HAUTE PRESSION - MANUEL D'UTILISATION MANUAL DE USUARIO DEL LIMPIADOR DE ALTA PRESIÓN

English

3

 

Français

22

 

Español

42

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

59639230 (12/10)

2

HIGH PRESSURE WASHER OPERATOR MANUAL

HIGH PRESSURE WASHER OPERA-

. . . 3

TOR MANUAL . . . . . . . . . . . . .

MODEL OVERVIEW . . . . . . . .

. . . 4

IMPORTANT SAFETY INSTRUCTIONS

. . . 5

ASSEMBLY INSTRUCTIONS .

. . . 7

OPERATING INSTRUCTIONS

. . . 9

USING THE ACCESSORIES . .

. . 11

WORKING WITH DETERGENTS

. . 11

TAKING A BREAK ..five minutes or more

. . 12

SHUTTING DOWN & CLEAN-UP

. . 13

WINTERIZING AND LONG-TERM STOR-

. . 14

AGE . . . . . . . . . . . . . . . . . . . . .

CARE AND MAINTENANCE INSTRUC-

. . 14

TIONS. . . . . . . . . . . . . . . . . . . .

CLEANING TIPS . . . . . . . . . . .

. . 15

OPTIONAL CLEANING ACCESSORIES

. . 17

TROUBLESHOOTING . . . . . . .

. . 19

Safety Alert Symbols

DANGER

indicates “an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

indicates “a potentially hazardous situation which, if not avoided, could result in death or injury.”

CAUTION

indicates “a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or in property damage incidents.”

Specifications

Max. Pressure

1800 PSI

Max. Water Flow

1.5 GPM

Amp draw

13 AMPS

Voltage

120 V

Part No.

1.603-120.0

Serial no.

 

For household use only!

Owner/User Responsibility

The owner and/or user must have an understanding of the manufacturer’s operating instructions and warnings before using this pressure washer. Warning information should be emphasized and understood.

If the operator is not fluent in English, the manufacturer’s instructions and warnings shall be read to and discussed with the operator in the operator’s native language by the purchaser/ owner, making sure that the operator comprehends its contents.

Owner and/or user must study and maintain for future reference the manufacturers’ instructions.

Customer Support

USA and Canada

In the U.S. or Canada, please call 1-800-537-4129 for warranty issues and visit www.karcher-help.com for technical support and product assistance.

Please take a moment to register your pressure washer online at www.karcher-register.com. Be sure to save your purchase receipt, it will be required for repairs covered by warranty.

Customer Support

Mexico

Call: 01-800-024-13-13 for help or visit our website: www.karcher.com.mx

English 3

MODEL OVERVIEW

1

Garden hose connector (female)

13

Detergent tank

2

Water inlet connector

14

Accessory storage

3

Water inlet with filter

15

Storage hook for mains connection

4

High pressure hose

 

 

 

 

cable

5

Quick coupling for high pressure

16

Power cord with Ground Fault Cir-

 

hose

 

 

 

 

cuit Interrupter (GFCI)

6

ON/OFF switch

17

Wheels

7

Dosage regulator for detergent

18

Trigger gun

8

Storage for trigger gun

19

Lock trigger gun

9

Transport handle, detachable

20

Key to detach the high pressure

10

Screws (Philips style)

 

 

 

 

hose from the trigger gun

11

Storage for high-pressure hose

21

Dirtblaster® (Rotary spray wand)

12

Detergent suction tube with filter

22

Vario Power Spray wand

 

and cap

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 English

IMPORTANT SAFETY INSTRUCTIONS

WARNING

When using this product basic precautions should always be followed, including the following:

To reduce the risk of injury, close supervision is necessary when a product is used near children.

Know how to stop the product and bleed pressures 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.

Keep operating area clear of all persons.

Do not overreach or stand on unstable support. Keep good footing and balance at all times.

Follow the maintenance instructions specified in the manual.

This product is provided with a Ground Fault Circuit Interrupter built into the power cord plug. If replacement of the plug or cord is needed, use only identical replacement parts.

WARNING

Risk of Injection or Injury – Do Not Direct Discharge Stream At Persons.

High pressure jets can be dangerous if misused. The jet must not be directed at persons, animals, electrical devices, or the unit itself.

Wear safety goggles.

WARNING

Risk Of Explosion – Do not spray

flammable liquids.

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.

CAUTION

Gun Kicks Back – Hold with both hands.

The Trigger Gun Safety Lock prevents the trigger from accidentally being engaged. This safety feature DOES NOT lock trigger in the ON position.

WARNING – Risk of Electrocu-

tion

Inspect cord before using – Do not use if cord is damaged.

Keep all connections dry and off the ground.

Do not touch plug with wet hands.

Do not use extension cord with this product.

Connect to individual branch circuit only.

CAUTION

This unit has been designed for use with cleaning detergents recommended by the manufacturer. The use of other cleaning detergents may affect the operation of the machine and void the warranty.

WARNING

Do not spray electrical apparatus and wiring.

Do not use with flammable liquids and toxic chemicals.

Injection hazard: equipment can cause serious injury if the spray penetrates

English 5

the skin. do not point the gun at anyone or any part of the body. In case of penetration seek medical aid immediately. This system is capable of producing 12400 kPa /1800 PSI to avoid rupture and injury, do not operate this pump with components rated less than 12400 kPa /1800 PSI working pressure (including but not limited to spray guns, hose and hose connections). Before servicing, cleaning or removing any parts, shut off power and relieve pressure.

GROUNDING INSTRUCTIONS

This product must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This product is equipped with a cord having an equipment-grounding conductor and a grounding plug. The plug must be plugged into an appropriate outlet that is properly installed and grounded in accordance with all local codes and ordinances.

DANGER

Improper connection of the equipmentgrounding conductor can result in a risk of electrocution. Check with a qualified electrician or service personnel if you are in doubt as to whether the outlet is properly grounded. Do not modify the plug provided with the product - if it will not fit the outlet, have a proper outlet installed by a qualified electrician. Do not use any type of adapter with this product.

GROUND FAULT CIRCUIT INTERRUPTER PROTECTION

This pressure washer is provided with a ground-fault circuit-interrupter (GF-

CI) built into the plug of the power-sup- ply cord. This device provides additional protection from the risk of electric shock. Should replacement of the plug or cord become necessary, use only identical replacement parts that include GFCI protection.

WATER SUPPLY

(Cold Water Only)

CAUTION

When connecting the water inlet to the water supply mains, local regulations of your water company must be observed. In some areas the unit must not be connected directly to the public drinking water supply. This is to ensure that there is no feedback of chemicals into the water supply. Direct connection via a receiver tank or backflow preventer, for example, is permitted.

Dirt in the feed water will damage the unit. To avoid this risk, we recommend fitting a water filter.

Garden hose must be at least 1/2 inch or 5/8 inch in diameter.

Flow rate of water supply must not fall below 2 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.

6 English

ASSEMBLY INSTRUCTIONS

For more detailed information on how to assemble this pressure washer, please visit

www.karcherresidential.com/ assembly

Required tools

APhilips Screwdriver, medium size (not supplied)

for final assembly

Assembly

Mount loose parts delivered with appliance prior to start-up.

Install wheels and hub caps

STEP 1:

Insert the wheel into the body, rotating the wheel as you push it into place. You should hear a click when the wheel is completely inserted. Then push the wheel cap into place on the wheel, press around edges and the center of the wheel cap to make sure it is properly seated. You should hear another click. Do not proceed with the assembly until the wheels are securely installed.

Install the storage for hand-spray gun

STEP 2:

Place the bottom holder into the recesses and push forward until it audibly locks in.

Insert the top holder and push down all the way.

Install the storage hook for the mains connection cable

STEP 3:

Press in the storage hook and lock it into the top position.

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Karcher K 3.740 User Manual

Install the transport handle

STEP 4:

Place the transport handle into the intake until you feel resistance. Use the heel of your hand or a soft rubber mallet to position it.

STEP 5:

To push the appliance, the transport handle must be pulled all the way up; it will lock into place audibly.

Install the dosage regulator for detergent

STEP 6:

Insert detergent suction tube onto the hose fitting.

Install the dosage regulator and connect using 2 screws.

Note: During installation you must make sure that the tongues of the dosage regulator match up with the intended recesses in the casing.

Connect the high pressure hose to the hand spray gun

STEP 7:

Push the high pressure hose into the trigger gun until it locks audibly. Note: Make sure the connection nipple is aligned correctly.

Check the secure connection by pulling on the high pressure hose.

Disconnect:

Press the disconnect key on the trigger gun and remove the high pressure hose from the trigger gun.

8 English

OPERATING INSTRUCTIONS

This pressure washer has been tested by Kärcher's quality assurance team. A small amount of water may be present in the water inlet or outlet. This is normal and will not affect the performance of the pressure washer.

STEP 1:

Insert the spray wand of your choice into the trigger gun. Press in against the spring tension and twist into locked position.

STEP 2:

Insert the high pressure hose tightly into the quick coupling on the appliance, it will lock in audibly.

Note: Make sure the connection nipple is aligned correctly. Check the secure connection by

pulling on the high pressure hose.

STEP 3:

Install the supplied connector to the unit’s water inlet.

Note: Never attach the garden hose connector to the unit’s water inlet!

STEP 4:

Screw the supplied garden hose connector on to the end of your garden hose. Push the garden hose connector on to the water inlet connector and make sure you hear it click into place before proceeding.

Disconnect:

Push the casing of the quick coupling for the high pressure hose toward the rear and disconnect the high pressure hose from the appliance.

English 9

STEP 5:

Connect garden hose to the cold water source and turn water on completely.

STEP 6:

Plug the Ground Fault Circuit Interrupter (GFCI) into a receptacle. Press RESET button, indicator should be “ON”.

Press TEST button, indicator should be “OFF”.

Press RESET button for use.

We recommend that you test the GFCI as part of your startup procedure each time you use your pressure washer. To learn how to peform this test on your unit, visit http://www.karcherresidential.com/ gfci_test.php for detailed instructions for your type of GFCI.

WARNING

Do not use if above test fails.

STEP 7:

Unlock the trigger gun safety lock. Trigger the gun to eliminate trapped air, wait for a steady flow of water to emerge from the spray nozzle.

STEP 8:

Turn on the high pressure washer (I/ON).

The motor starts only if the trigger of the gun is pulled and shuts off when the trigger is released.

10 English

USING THE ACCESSORIES

WARNING

To avoid serious injury never point spray nozzle at yourself, other persons or animals.

Always test an inconspicuous area before cleaning with high pressure.

Vario Power Spray Wand

The Vario Power Spray Wand allows you to adjust the cleaning pressure.

To clean at maximum pressure, the wand must be positioned to the high pressure setting (Max).

For lower pressure turn the wand collar in the minus (Min) direction.

Dirtblaster ®

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.

Before cleaning any surface an inconspicuous area should be cleaned to test spray pattern and distance for maximum cleaning results.

To apply detergent, the wand must be positioned to the lower pressure setting (Mix).

WORKING WITH DETERGENTS

Detergents can only be applied at low pressure setting (Mix).

STEP 1:

Install the Vario Power Spray Wand. Set the spray wand to the low pressure setting (Mix).

STEP 2:

Fill the detergent tank with Karcher detergent and position the tank into its storage area. Insert the suction tube with filter into the tank and close it with the cap.

English 11

STEP 3:

Adjust the suction volume of the detergent solution by means of the dosage regulator for detergents.

STEP 4:

Turn on the pressure washer (I). 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.

STEP 5:

To rinse, move the VPS out of „Mix“ position and pull trigger to operate unit.

STEP 6:

Cleaning up: Always draw fresh water through the detergent tank or siphon tube when done to flush any remaining detergents from the injection system.

For best results see Cleaning Tips for specific information on how to clean different surfaces.

Always Use Kärcher® Detergent for

Best Results

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 visit our website:

www.buykarcher.com

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.

Use of these items will void the warranty.

TAKING A BREAK ..five minutes or more

STEP 1:

Release trigger and engage gun safety lock.

STEP 2:

Turn pressure washer to OFF (0) position.

12 English

SHUTTING DOWN & CLEAN-UP

STEP 1:

Turn the switch to OFF (0) position and unplug cord from outlet.

STEP 2:

Turn off the water source.

STEP 3:

Press trigger to release water pressure.

STEP 5:

Disconnect the garden hose from the water inlet on the unit. Caution: When disconnecting the supply or high pressure hose, warm water may leak from the connections after operation.

STEP 4:

Release trigger and engage gun safety lock.

English 13

WINTERIZING AND LONG-TERM STORAGE

1: Disconnect all water connections.

2: Turn on the machine for a few seconds, until the water which had remained in the pump exits, turn off immediately.

3: Do not allow high pressure hose to become kinked.

4: Store the machine and accessories in a room which does not reach freezing temperatures. DO NOT store near furnace or other sources

of heat as it may dry out the pump seals.

CAUTION

Failure to follow the above directions will result in damage to the pump assembly and accessories and will void the warranty.

Kärcher® also recommends the regular practice of using a pump protector like “Kärcher® Pump Guard” to prevent cold weather damage during storage in the winter months.

CARE AND MAINTENANCE INSTRUCTIONS

Cleaning the water inlet filter

STEP 1:

Pull out water inlet filter with flatnose pliers.

STEP 3:

Reinsert water inlet filter.

Maintenance

The unit is maintenance-free.

STEP 2:

Rinse out water inlet filter in warm water.

14 English

CLEANING TIPS

CAUTION

Before cleaning any surface an inconspicuous area should be cleaned to test spray pattern and distance for maximum cleaning results.

If painted surfaces are peeling or chipping, use extreme caution as pressure washer may remove the loose paint from the surface.

When using on surfaces which might come in contact with food, flush surfaces with plenty of drinking water.

For additional cleaning tips and a complete video library, visit our website: www.karcherresidential.com

Deck Cleaning

(with or without detergent). Pre-rinse deck and surrounding area with fresh water. If using detergent, apply to surface at low pressure. For best results, limit your work area to smaller sections of approximately 25 square feet. Allow detergent 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.

House Siding

(with or without detergent). Pre-rinse cleaning surface with fresh water. If us-

ing detergent, 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 detergent 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 (not included) 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.

Cement Patios, Brick and Stone

(with or without detergent). Pre-rinse cleaning surface with fresh water. If using detergent or Degreaser, apply to surface at low pressure. For best results, limit your work area to smaller sections of approximately 25 square feet. Allow detergent or Degreaser 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 the Dirtblaster® Nozzle.

Cars, Boats & Motorcycles

(with or without detergent). Pre-rinse vehicle with fresh water. If using detergent, 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. If needed,

English 15

use special wash brush attachment (not included) 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.

Barbecue Grills, Outdoor Power

Equipment & Gardening Tools

(with or without detergent). Pre-rinse cleaning surface with fresh water. If using detergent or Degreaser, apply detergent at low pressure. Allow 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.

Patio & Lawn Furniture

(with or without detergent). Pre-rinse furniture and surrounding area with fresh water. If using detergent, apply to surface at low pressure. Allow detergent to remain on surface 1-3 minutes. Do not allow detergent to dry on surface. If needed use special Wash Brush Attachment (not included) to remove stubborn dirt. 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.

16 English

OPTIONAL CLEANING ACCESSORIES

Optional accessories are available to further enhance your cleaning capabilities. These accessories are accurate as of the printing date of this manual. Please check our website for pricing and up-to-date information.

Pump Guard

Specially formulated to protect your pressure washer from freezing, corrosion and premature wear. The Pump Guard also adds lubrication to valves and seals to prevent sticking. Highly recommended for all Kärcher® pressure washers!

Part No. 9.558-998.0

25 Ft. Extension High-Pressure

Hose

Extension Hose for all Kärcher® high pressure washers between the original equipment hose and gun up to

2000 PSI.

Part No. 2.642-588.0

66" Extension Wand (Four piece)

Need to clean second story windows or other high areas? Increase the reach of your pressure washer by up to 66" with this extension kit. Includes 4 aluminum sections for variable length. 66" fully assembled. Fits most Kärcher® pressure washers up to 2300 PSI. (bayonet)

Part No. 2.640-746.0

Rotating Wash Brush (bayonet)

For more effortless cleaning of all smooth surfaces (painted, glass and plastic) try the Kärcher® Rotating Wash Brush. Use it on your automobile, house siding or windows. The water pressure from your pressure washer

causes the inner brushes to gently spin, making your cleaning job much easier. The angle of brush head is adjustable to help you reach difficult areas. Excellent for the application of detergent. A must-have accessory designed for Kärcher® pressure washers up to 2300 PSI. (bayonet)

Part No. 2.640-743.0

Soft Clean Washing Brush

Made with soft bristles that will not harm painted surfaces. Easily attaches directly to the trigger gun. Ideal for stubborn dirt on cars, boats, patio furniture and other surfaces. Great for applying detergent. Fits most Kärcher® pressure washers up to 2300 PSI. (bayonet)

Part No. 2.640-740.0

25 ft. Pipe Cleaning Kit (bayonet)

Need to clean blocked pipes, drains or downspouts? The Kärcher® pipe cleaning kit is the answer! The pipe cleaner propels itself forward while simultaneously flushing out debris. For example, insert the cleaning nozzle in the base of a downspout, pull the trigger on the pressure washer gun and watch as the nozzle shoots out leaves and other debris while climbing upward. Connects directly to the trigger gun of most Kärcher® pressure washers up to 2300 PSI. (bayonet)

Part No. 2.640-747.0

Wet Sandblasting Kit (bayonet)

Why spend hours stripping old paint and rust by hand using harsh chemicals? Let the Kärcher® Wet Sandblasting Kit do the work! Attach the kit to your pressure washer, add abrasive

English 17

material and attack the rust and paint with our eco-friendly alternative. Fits most Kärcher® pressure washers up to 2300 PSI. (bayonet)

Part No. 2.638-792.0

Detergent Foamer Attachment

Ideal for applications which require a thick foam. Simply fill the resevoir cup with liquid pressure washer detergent to generate a foam spray. Connects directly to the trigger gun. Fits most Kärcher® pressure washers up to 2300 PSI. (bayonet)

Part No. 6.964-507.0

T 200 Wide Area Surface Cleaner

For cleaning surfaces such as patios, terraces and driveways without splashback, there is no better solution than the Kärcher® T 200. It saves time by cleaning a one foot wide area gently as it hovers, providing consistent, streakfree cleaning. When you finish cleaning the patio and driveway, remove the wand and use the handle to clean garage doors and other vertical surfaces. Includes two nozzles which spin at high speed for optimum results. Our top selling accessory for Kärcher® pressure washers up to 2300 PSI. (bayonet)

Part No. 2.642-188.0

18 English

TROUBLESHOOTING

CAUTION

Disconnect the machine from the pow-

 

er source before making any repair.

 

 

 

Symptom

Cause

Solution

Motor will not start

On/Off switch is in the “OFF”

Turn switch to the “ON” (I) posi-

 

(0) position.

tion

 

Power cord is not plugged in.

Plug in power cord.

 

Electrical outlet does not

Try a different outlet.

 

supply adequate power.

 

 

Tripped GFCI plug.

Press “RESET” button on GFCI

 

 

plug.

 

Tripped circuit breaker.

Switch off pressure washer.

 

 

The reset comes automatically

 

 

once the temperature of the

 

 

unit drops.

Unit does not

Diameter of garden hose is

Replace with a 5/8 inch or larg-

reach high pres-

too small.

er garden hose.

sure.

 

 

Water supply is restricted.

Check garden hose for kinks,

 

 

leaks and blockage.

 

Not enough inlet water sup-

Open water source full force.

 

ply.

 

 

Water inlet filter is clogged.

Remove filter and rinse out in

 

 

warm water.

 

Spray wand is on low pres-

Turn spray wand to high pres-

 

sure position.

sure position.

Output pressure

Not enough inlet water sup-

Turn water on full force. Check

varies high and

ply.

garden hose for kinks, leaks or

low.

 

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 obstruct-

Blow out or remove debris with

 

ed.

a fine needle.

 

Calcified gun, hose or spray

Run distilled vinegar through

 

wand.

detergent suction tube.

English 19

Symptom

Cause

Solution

No detergent.

Detergent suction tube not

Check connection.

 

properly connected to the

 

 

machine.

 

 

Detergent is too thick.

Dilute detergent, for best re-

 

 

sults use Kärcher® detergent.

 

Filter on detergent suction

Run warm water through filter

 

tube is clogged.

to remove debris.

 

Damaged or clogged deter-

Remove obstruction or replace

 

gent suction tube.

detergent suction tube.

 

Spray wand is in high pres-

Turn spray wand tip to low

 

sure position.

pressure position.

 

Discharge nozzle is obstruct-

Blow out or remove debris with

 

ed.

fine needle.

Garden hose con-

Loose fittings.

Tighten fittings.

nection leaks.

 

 

Missing/worn rubber washer.

Insert new washer.

Spray wand leaks.

Spray wand not properly at-

Insert the spray wand into the

 

tached.

trigger gun. Carefully press in

 

 

against the spring tension and

 

 

twist into the locked position.

 

Broken o-ring or plastic in-

Call Customer Support

 

sert.

 

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

Loose fittings.

Check that all fittings are tight.

pump (up to 10

 

 

Water seals are damaged or

Call Customer Support

drops per minute

worn.

 

is permissible).

 

 

Oil Drip.

Oil seals are damaged or

Call Customer Support

 

worn.

 

If you encounter any additional difficulties not listed, please visit our website.

USA / Canada:

www.karcher-help.com

México:

www.karcher.com.mx

20 English

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