Kärcher K 3.67 M User manual

K 3.68 M
5.962-087.0 10/06

2

English 3
Call: 1-800-537-4129 for help or visit
our website:
www.karcher-usa.com/home
Please take a moment to register your
pressure washer online at
www.karcher-usa.com/warranty
Call: 1-800-465-4980 for help or visit
our website:
www.karcher-canada.com
Call: 01-800-024-13-13 for help or visit
our website: www.karcher.com.mx
DANGER
indicates “an imminently hazardous sit-
uationwhich,ifnotavoided,willresultin
death or serious injury.”
WARNING
indicates “a potentially hazardous situa-
tion which, if not avoided, could result in
death or injury.”
CAUTION
indicates “a potentially hazardous situa-
tion which, if not avoided, may result in
minor or moderate injury or in property
damage incidents.”
The owner and/or user must have an
understanding of the manufacturer’s
operating instructions and warnings be-
fore using this pressure washer.
Warning information should be empha-
sized and understood.
If the operator is not fluent in English,
the manufacturer’s instructions and
warningsshallbereadtoanddiscussed
withtheoperatorintheoperator’snative
language by the purchaser/owner, mak-
ing sure that the operatorcomprehends
its contents.
Owner and/or user must study and
maintain for future reference the manu-
facturers’ instructions.
HIGH PRESSURE WASHER OPERATOR MANUAL
MODEL OVERVIEW 4
IMPORTANT SAFETY
INSTRUCTIONS 5 - 6
ASSEMBLY INSTRUCTIONS 7
OPERATING INSTRUCTIONS 7 - 8
USING THE ACCESSORIES 9
WORKING WITH DETERGENTS 9 - 10
TAKING A BREAK 11
SHUTTING DOWN & CLEAN-UP 11
WINTERIZING AND LONG-TERM
STORAGE 12
CARE AND MAINTENANCE
INSTRUCTIONS 13
CLEANING TIPS 13 - 14
OPTIONAL CLEANING
ACCESSORIES 15 - 16
TROUBLESHOOTING 17 - 18
Specifications
Max. Pressure 1800 PSI
Water volume 1.5 GPM
Amp draw 13 AMPS
Voltage 120 V
Part No. 1.601-742.0
Serial no.
Kärcher Customer Support USA
Kärcher Customer Service CDN
Kärcher Customer Support
Mexico
Safety Alert Symbols
Owner/User Responsibility

4 English
1 PowercordwithGroundFaultCircuit
Interrupter (GFCI)
2 Trigger gun
3 Trigger gun safety lock
4 High pressure hose
5 Water inlet with garden hose con-
nector
6 Transport handle
7 Accessory storage
8 High pressure hose storage
9 Trigger gun storage
10 Detergent tank (removeable)
11 Detergent suction tube with filter
12 High pressure outlet
13 ON/OFF switch
14 Vario Power Spray wand
15 Dirtblaster® (Rotating spray wand)
CAUTION
Thisunithasbeendesignedforusewith
cleaning detergents recommended by
the manufacturer. The use of other
cleaning detergents may affect the op-
eration of the machine and void the war-
ranty.
For household use only!
MODEL OVERVIEW

English 5
WARNING!
When using this product basic
precautions should always be
followed, including the following:
Read all the instructions before us-
ing the product.
To reduce the risk of injury, close su-
pervision is necessary when a prod-
uct is used near children.
Know how to stop the product and
bleed pressures quickly. Be thor-
oughly familiar with the controls.
Stay alert – watch what you are do-
ing.
Do not operate the product when fa-
tigued or under the influence of alco-
hol or drugs.
Keep operating area clear of all per-
sons.
Do not overreach or stand on unsta-
ble 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 Re-
placement Of The Plug Or Cord Is
Needed, Use Only Identical Re-
placement Parts.
Risk of Injection or Injury – Do Not
Direct Discharge Stream At Per-
sons.
Highpressurejetscanbedangerous
if misused. The jet must not be di-
rectedatpersons,animals,electrical
devices, or the machine itself.
Wear safety goggles.
Do not use acids and solvents in this
product. These products can cause
physical injuries to the operator and
irreversible damage to the machine.
To reduce the risk of electrocution,
keep all connections dry and off the
ground. Do not touch plug with wet
hands.
The Trigger Gun Safety Lock PRE-
VENTS the trigger from accidentally
being engaged. This safety feature
DOES NOT lock trigger in the ON
position.
Do not use extension cord with this
unit.
This product must be grounded. If it
should malfunction or breakdown,
groundingprovides a path of least resis-
tance for electric current to reduce the
risk of electric shock. This product is
equipped with a cord having an equip-
ment-grounding conductor and a
grounding plug. The plug must be
pluggedintoanappropriateoutletthatis
properly installed and grounded in ac-
cordance with all local codes and ordi-
nances.
DANGER
Improper connection of the equipment-
grounding 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 in-
stalled by a qualified electrician. Do not
use any type of adapter with this prod-
uct.
IMPORTANT SAFETY INSTRUCTIONS
GROUNDING INSTRUCTIONS

6 English
This product is supplied with a Ground
Fault Circuit Interrupter (GFCI) built into
the power cord plug. This device pro-
vides additional protection from the risk
of electric shock. If power is interrupted
in the line, the GFCI will automatically
re-close the circuit to the load afterpow-
er is restored. Depending on the GFCI
model, it may be necessary tomanually
operate the reset button to restore pow-
er to the GFCI load circuit. If replace-
ment of the plug or cord is needed use
identical replacement parts.
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 con-
nected directly to the public drinking wa-
ter supply. This is to ensure that there is
no feedback of chemicals into the water
supply. Direct connection via a receiver
tankorbackflowpreventer,forexample,
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 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 run-
ning 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 sol-
vents, e.g. paint thinners, gasoline,
oil, etc.
Always prevent debris from being
drawn into the unit by using a clean
water source.
SAVE THESE
INSTRUCTIONS!!
GROUND FAULT CIRCUIT IN-
TERRUPTER PROTECTION
WATER SUPPLY
(Cold Water Only)

English 7
APhilips Screwdriver, medium size
(not supplied)
for final assembling the unit.
ÎSTEP 1:
ÎSTEP 2:
ÎSTEP 3:
ÎSTEP 4:
ÎSTEP 1:
Connect the high pressure hose to
the unit’s high pressure outlet.
ÎSTEP 2:
Insert the spray wand of your choice
into the trigger gun. Press in against
the spring tension and twist into
locked position.
ASSEMBLY INSTRUCTIONS
Required tools
OPERATING INSTRUCTIONS

8 English
ÎSTEP 3:
Connect garden hose to unit’s water
inlet.
ÎSTEP 4:
Connect garden hose to the cold wa-
ter source and turn water on com-
pletely.
ÎSTEP 5:
Plug the Ground Fault Circuit Inter-
rupter (GFCI) into a receptacle.
Press RESET button, indicator
should be “ON”.
Press TEST button, indicator should
be “OFF”.
Press RESET button for use.
WARNING
Do not use if above test fails.
ÎSTEP 6:
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.
ÎSTEP 7:
Turn on the high pressure washer
(I).
Themotorstartsonlyif the trigger
of the gun is pulled and shuts off
when the trigger is released.

English 9
WARNING
To avoid serious injury never point
spray nozzle at yourself, other per-
sons or animals.
TheVarioPowerSprayWandallows
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.
To apply detergent, the wand must
be positioned to the lower pressure
setting (Mix).
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
thesurfacecoverageofa wideangle
nozzle.
Not recommended for soft materi-
als, siding, painted surfaces,
decks or autos.
Always test an inconspicuous area
before cleaning with the Dirtblaster
Detergents can only be applied at
low pressure setting (Mix).
ÎSTEP 1:
Install the Vario Power Spray Wand.
Set the spray wand to the low pres-
sure setting (Mix).
ÎSTEP 2:
Fill the Detergent Tank with the se-
lected Ready To Use detergent.
ÎSTEP 3:
Turn on the pressure washer (I). Pull
trigger to operate unit: Liquid deter-
gentis drawn into the unit andmixed
USING THE ACCESSORIES
Vario Power Spray Wand
Dirtblaster®
WORKING WITH DETERGENTS

10 English
with water. Apply detergent to work
area. Do not allow detergent to dry
on surface.
ÎSTEP 4:
Cleaning up: Always draw fresh wa-
ter through the detergent tank or si-
phon tube when done to flush any
remaining detergents from the injec-
tion 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 envi-
ronmentandyourpressurewasher.The
special formula won’t clog the suction
tube filter and will protect the internal
parts of the pressure washer for a long-
er life. For Kärcher Detergents, check
your retailer or visit our website:
www.karcher-usa.com/home
ThefollowingKärcherdetergentsare
available:
One Gallon ready to use
All Purpose & Vehicle Cleaner
Deck & Patio Cleaner
Heavy Duty Degreaser
Exterior House 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.
Use of these items will void the war-
ranty.
ÎSTEP 1:
Release trigger and engage gun
safety lock.
ÎSTEP 2:
Turn pressure washer to OFF (O)
position.
TAKING A BREAK ..five minutes or more

English 11
ÎSTEP 1:
Turn the switch to OFF (0) position
and unplug cord from outlet.
ÎSTEP 2:
Turn off the water source.
ÎSTEP 3:
Press trigger to release water pres-
sure.
ÎSTEP 4:
Disconnect the garden hose from
the water inlet on the unit.
ÎSTEP 5:
Disconnect the high pressure hose
from the high pressure outlet.
ÎSTEP 6:
Release trigger and engage gun
safety lock.
SHUTTING DOWN & CLEAN-UP

12 English
Î1: Disconnect all water connections.
Î2: Turn on the machine for a few
seconds, until the water which had
remained in the pump exits, turn off
immediately.
Î3: Do not allow high pressure hose
to become kinked.
Î4: Store the machine and accesso-
ries 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 as-
sembly and accessories.
Kärcher also recommends the regular
practice of using a pump protector like
“Kärcher Pump Guard” to help during
storage in the winter months.
ÎSTEP 1:
Pull out washer from the water inlet.
ÎSTEP 2:
Pull out water inlet filter with flat-
nose pliers.
ÎSTEP 3:
Rinse out water inlet filter in warm
water.
ÎSTEP 4:
Reinsert water inlet filter and washer
into the water inlet.
The unit is maintenance-free.
WINTERIZING AND LONG-TERM STORAGE
CARE AND MAINTENANCE INSTRUCTIONS
Cleaning the water inlet filter Maintenance

English 13
(with or without detergent). Pre-rinse
deck and surrounding area with fresh
water. If using Kärcher Deck Wash, ap-
ply to surface at low pressure. For best
results, limit your work area to smaller
sections of approximately 25 square
feet. Allow Deck Wash to remain on sur-
face 1-3 minutes. Do not allow deter-
gent to dry on surface. Rinse at high
pressure in a long sweeping motion
keepingthespraynozzleapproximately
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
eliminatestopmarksandensureamore
even cleaning result.
(with or without detergent). Pre-rinse
cleaning surface with fresh water. If us-
ing Kärcher Pressure Wash, apply to
surfaceatlowpressure(forbestresults,
limit your work area to sections of ap-
proximately 6 feet and always apply de-
tergent from bottom to top). Allow
Pressure Wash to remain on surface 1-
3 minutes.Do not allow detergent to dry
on surface, if surface appears to be dry-
ing, simply wet down surface with fresh
water. If needed, use special wash
brush attachment (not included) to re-
move stubborn dirt. Rinse at high pres-
sure from top to bottom in an even
sweeping motion keeping the spray
nozzle approximately 6 inches from the
cleaning surface.
(with or without detergent). Pre-rinse
cleaning surface with fresh water. If us-
ingKärcherPressureWash or Degreas-
er, apply to surface at low pressure. For
best results, limit your work area to
smaller sections of approximately 25
square feet. Allow Pressure Wash 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
thecleaningsurface.Alwayscleanfrom
top to bottom and from left to right. For
removing extremely stubborn stains,
use the Dirtblaster Nozzle.
(with or without detergent). Pre-rinse
vehicle with fresh water. If using Kärch-
er Touchless Vehicle Wash, apply to
surface at low pressure. For best re-
sults, clean one side of vehicleat a time
andalwaysapplydetergentfrombottom
to top, do not allow detergent to dry on
surface. If needed, use special wash
brush attachment (not included) to re-
move stubborn dirt. Rinse at high pres-
sure in a sweeping motion keeping the
spray nozzle approximately 6-8 inches
from the cleaning surface (distance
should increase when rinsing pin-strip-
ing or other sensitive surfaces). Always
clean from top to bottom and fromleft to
right. For best results, wipe surface dry
with a chamois or soft dry cloth.
CLEANING TIPS
Deck Cleaning
House Siding
Cement Patios, Brick and Stone
Cars, Boats & Motorcycles

14 English
(with or without detergent). Pre-rinse
cleaning surface with fresh water. If us-
ingKärcherPressure Wash or Degreas-
er, apply detergent at low pressure.
Allow Pressure Wash to remain on sur-
face 1-3 minutes. Do not allow deter-
gent to dry on surface. Rinse at high
pressure keeping the spray nozzle ap-
proximately 3-6 inches from the clean-
ing surface. For removing extremely
stubborn dirt, it may be necessary to
move the spray nozzle even closer to
the surface for greater dirt cutting ac-
tion.
(with or without detergent). Pre-rinse
furniture and surrounding area with
fresh water. If using Pressure Wash, ap-
ply to surface at low pressure. Allow
Pressure Wash to remain on surface 1-
3 minutes. Do not allow detergent todry
on surface. If neededuse special Wash
Brush Attachment (not included) to re-
move 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 re-
sults, clean from top to bottom and from
left to right.
Before cleaning any surface an in-
conspicuousareashouldbecleaned
totest spray patternand distancefor
maximum cleaning results.
If painted surfaces are peeling or
chipping, use extreme caution as
pressure washer may remove the
loose paint from the surface.
Whenusingonsurfaceswhichmight
come in contact with food, flush sur-
faces with plenty of drinking water.
For additional cleaning tips, visit our
website at
www.karcher-usa.com/home
Barbecue Grills, Outdoor Power
Equipment & Gardening Tools
Patio & Lawn Furniture
Recommendations

English 15
Optional accessories are available to
further enhance your cleaning capabili-
ties.Theseaccessoriesareaccurateas
of the printing date of this manual.
Please check our website www.karch-
er-usa.com/home for pricing and up-to-
date information.
Specially formulated to protect your
pressure washer from freezing, corro-
sion and premature wear. The Pump
Guard also adds lubrication to valves
and seals to prevent sticking. Highly
recommended for all Karcher pressure
washers!
Part No. 9.558-998.0
Attach this accessory to your pressure
washer to quickly pump large quantities
of water out of a standing source, such
as a barrel or bucket. Fits most Karcher
pressure washers up to 2300 PSI.
Part No. 2.637-214.0
Replacement hose fits Kärcher pres-
sure washer with screw-on type gun
connections from 2400psi to 2500psi,
Extension Hose for all Kärcher high
pressure washers between the original
equipment hose and machine up to
2500 psi.
Part No. 2.640-850.0
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 as-
sembled. Fits most Karcher pressure
washers up to 2300 PSI. (bayonet)
Part No. 2.640-746.0
For more effortless cleaning of all
smooth surfaces (painted, glass and
plastic) try Karcher's Rotating Wash
Brush.Useitonyourautomobile,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 an-
gle of brush head is adjustable to help
you reach difficult areas. Excellent for
the application of detergent. A must-
have accessory designed for Karcher
pressure washers up to 2300 PSI. (bay-
onet)
Part No. 2.640-743.0
Madewith softbristles thatwill not harm
painted surfaces. Easily attaches direct-
ly to the trigger gun. Ideal for stubborn
dirt on cars, boats, patio furniture and
other surfaces. Great for applying deter-
gent. Fits most Karcher pressure wash-
ers up to 2300 PSI. (bayonet)
Part No. 2.640-740.0
Need to clean blocked pipes, drains or
downspouts? Karcher's pipe cleaning
kit is the answer! The pipe cleaner pro-
pels itself forward while simultaneously
flushing out debris. For example, insert
OPTIONAL CLEANING ACCESSORIES
Pump Guard
Water Pumping Kit
25 Ft. Extension /Replacement
High-Pressure Hose
66" Extension Wand (Four piece)
Rotating Wash Brush (bayonet)
Soft Clean Washing Brush
25 ft. Pipe Cleaning Kit (bayonet)

16 English
the cleaning nozzle in the base of a
downspout, pull the trigger on the pres-
sure washer gun and watch as the noz-
zle shoots out leaves and other debris
while climbing upward. Connects direct-
ly to the trigger gun of most Karcher
pressure washers up to 2300 PSI. (bay-
onet)
Part No. 2.640-747.0
Whyspendhoursstrippingoldpaintand
rust by hand using harsh chemicals?
Let Karcher's Wet Sandblasting Kit do
the work! Attach the kit to your pressure
washer, add abrasive material and at-
tack the rust and paint with our eco-
friendly alternative. Fits most Karcher
pressure washers up to 2300 PSI. (bay-
onet)
Part No. 2.638-792.0
Ideal for applications which require a
thick foam. Simply fill the resevoir cup
withliquidpressurewasherdetergentto
generate a foam spray. Connects di-
rectly to the trigger gun. Fits most
Karcher pressure washers up to 2300
PSI. (bayonet)
Part No. 6.964-507.0
For cleaning surfaces such as patios,
terraces and driveways without splash-
back, there is no better solution than
Karcher's T 100. It saves time by clean-
ing a one foot wide area gently as it hov-
ers, providing consistent, streak-free
cleaning. When you finish cleaning the
patio and driveway, remove the wand
and use the handle to clean garage
doors and other vertical surfaces. In-
cludes two nozzles which spin at high
speed for optimum results. Our top sell-
ing accessory for Karcher pressure
washers up to 2300 PSI. (bayonet)
Part No. 2.640-959.0
Wet Sandblasting Kit (bayonet)
Detergent Foamer Attachment
T 100 Wide Area Surface Cleaner

English 17
CAUTION Disconnectthemachinefromthepower
source before making any repair.
TROUBLESHOOTING
Symptom Cause Solution
Motor will not start On/Off switch is in the “OFF”
(O) position. Turn switch to the “ON” (I) position
Power cord is not plugged in. Plug in power cord.
Electrical outlet does not
supply adequate power. Try a different outlet.
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
reach high pres-
sure.
Diameter of garden hose is
too small. Replace with a 5/8 inch or larger 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.
Spray wand is on low
pressure position. Turn spray wand to high pressure position.
Output pressure
varies high and
low.
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 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.

18 English
Call: 1-800-537-4129 for help or visit our
website:
www.karcher-usa.com/home
Call: 1-800-465-4980 for help or visit our
website: www.karcher-canada.com
Call: 01-800-024-13-13 for help or visit our
website: www.karcher.com.mx
No detergent. Detergent suction tube not
properly connected to the
machine.
Check connection.
Detergent is too thick. Dilute detergent, for best re-
sults 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 fine needle.
Garden hose con-
nection leaks. Loose fittings. Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Spray wand leaks. Spray wand not properly
attached. Insert the spray wand into the trigger gun. Carefully press in
against the spring tension and
twist into the locked position.
Broken o-ring or plastic
insert. Call Customer Support
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
dropsperminuteis
permissible).
Loose fittings. Check that all fittings are tight.
Water seals are damaged or
worn. Call Customer Support
Oil Drip. Oil seals are damaged or
worn. Call Customer Support
Symptom Cause Solution
Kärcher Customer Support USA
Kärcher Customer Service CDN
Kärcher Customer Support
Mexico