Kärcher K 3.67 M User manual

English
K 3.96 M
5.962-142.0 11/06EN
Please keep the original box, packaging and receipt. Before operating this
unit, please read this manual thoroughly and retain it for future reference.

2 English
Call: 1-800-537-4129 for help or visit
our website:
www.karcher-canada.com
DANGER
indicates “an imminently hazardous sit-
uationwhich,if not avoided,willresultin
death or serious injury.”
WARNING
indicates “a potentially hazardous situa-
tion which, ifnot 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 operator comprehends
its contents.
Owner and/or user must study and
maintain for future reference the manu-
facturers’ instructions.
HIGH PRESSURE WASHER OPERATOR MANUAL
MODEL OVERVIEW 3
IMPORTANT SAFETY IN-
STRUCTIONS 4-5
ASSEMBLY INSTRUCTIONS 6
OPERATING INSTRUCTIONS 7
USING THE ACCESSORIES 8
WORKING WITH DETERGENTS 9
TAKING A BREAK 10
SHUTTING DOWN & CLEAN-UP 10
WINTERIZING AND LONG-
TERM STORAGE 11
CARE AND MAINTENANCE IN-
STRUCTIONS 11
CLEANING TIPS 12-13
OPTIONAL CLEANING ACCES-
SORIES 14-15
TROUBLESHOOTING 16-17
Specifications
Max. Pressure 1750 PSI
Water volume 1.5 GPM
Amp draw 13 AMPS
Voltage 120 V
Part No. 1.636-104.0
Serial no.
Kärcher Customer Service CDN
Safety Alert Symbols
Owner/User Responsibility

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

4 English
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 neccessary when a
product 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.
Risk of Injection or Injury to persons
- Do not direct discharge stream at
persons.
Highpressurejetscanbedangerous
if subject to misuse. The jet must not
be directed at persons, animals,
electrical devices, or the machine it-
self.
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.
WARNING
Do not spray electrical apparatus and
wiring.
Do not use with flammable liquids and
toxic chemicals.
Injection hazard: equipment can cause
serious injuryifthespraypenetratesthe
skin. do not point the gun at anyone or
any part of the body. In case of penetra-
tion seek medical aid immediately.
This system is capable of producing
1750 PSI to avoid rupture and injury, do
not operate this pump with components
rated less than 1750 PSI working pres-
sure (including but not limited to spray
guns, hose and hose connections).
Before servicing, cleaning or removing
any parts, shut off power and relieve
pressure.
This product must be grounded. If it
should malfunction or breakdown,
grounding provides 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
IMPORTANT SAFETY INSTRUCTIONS
GROUNDING INSTRUCTIONS

English 5
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.
Use only 3-wire extention cords that
have 3-prong grounding-type plugs
and 3-pole cord connectors that ac-
cept the plug from the product.
Up to 25 ft = 12/3 AWG;
25 to 50 ft = 10/3 AWG.
Use only extension cords that are in-
tended for outdoor use. These ex-
tension cords are identified by the
marking “Acceptable for use with
outdoor appliances; store indoors
while not in use.”
Use only extension cords having an
electrical rating not less than the rat-
ing of the product.
Do not use damaged extension
cords.
Examine extension cord before us-
ing and replace if damaged.
Do not abuse extension cord and do
not yank on any cord to disconnect.
Keepcordawayfromheatandsharp
edges.
Always disconnect the extension
cord from the receptacle before dis-
connecting the product from the ex-
tension cord.
Ifyou are using an extensioncord,it
should always be completely un-
wound from the cable drum.
WARNING
Toreducetheriscofelectrocution,keep
all connections dry and off the ground.
Do not touch plug with wet hands.
CAUTION
Dirt in the feed water will damage the
unit. To avoid this risk, we recommend
fitting a water filter.
Water 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 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 !
Extension Cords
WATER SUPPLY (Cold Water
Only)

6 English
Screwdriver, small size (not sup-
plied)
for connecting high pressure hose
and trigger gun.
ÎInsert the bearing wheels into the
axle box and lock them.
ÎAttach the high pressure hose to the
trigger gun. Pull out the locking slide
from the right side of the trigger gun
handle (A), and insert the small end
of the high pressure hose into place
(B). Push the locking slide back into
the trigger gun to lock the hose in po-
sition (C).
ASSEMBLY INSTRUCTIONS
Required tools
Step 1
Step 2

English 7
ÎSTEP 1:
Insert the spray wand of your choice
into the trigger gun. Press in against
the spring tension and twist into
locked position.
ÎSTEP 2:
Connect garden hose to unit’s water
inlet.
ÎSTEP 3:
Connect garden hose to the cold wa-
ter source and turn water on com-
pletely. Plug the power cord into the
power outlet.
ÎSTEP 4:
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 5:
Turn on the high pressure washer
(I).
Themotorstartsonlyifthe trigger
of the gun is pulled and shuts off
when the trigger is released.
OPERATING INSTRUCTIONS

8 English
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
thesurfacecoverageofawideangle
nozzle.
Not recommended for soft materi-
als, siding, painted surfaces,
decks or autos.
Always test an inconspicuous area
before cleaning with the Dirtblaster
USING THE ACCESSORIES
Vario Power Spray Wand
Dirtblaster®

English 9
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 drawninto the unit and mixed
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
The following Kärcher detergents are
available:
Pressure wash
Deck + Fence wash
Degreaser
Vehicle wash
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.
WORKING WITH DETERGENTS

10 English
ÎSTEP 1:
Release trigger and engage gun
safety lock.
ÎSTEP 2:
Turn pressure washer to OFF (O)
position.
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:
Release trigger and engage gun
safety lock.
TAKING A BREAK ..five minutes or more
B
A
SHUTTING DOWN & CLEAN-UP
23
B
A

English 11
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 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.
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 filterand washer
into the water inlet.
Pull it out and rinse out in warm water.
The unit is maintenance-free.
WINTERIZING AND LONG-TERM STORAGE
CARE AND MAINTENANCE INSTRUCTIONS
Cleaning the water inlet filter
Cleaning the detergent inlet filter
Maintenance

12 English
(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
keepingthe spray nozzleapproximately
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.
CAUTION
Donotuserotatingjetonwoodsurfaces
as it may cause damage.
(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 to remove stubborn
dirt. Rinse at high pressure from top to
bottom in an even sweeping motion
keepingthespraynozzleapproximately
6 inches from the cleaning surface.
CAUTION
Do not use rotating jet on siding as it
may cause damage.
(with or without detergent). Pre-rinse
cleaning surface with fresh water. If us-
ingKärcher Pressure Wash or Degreas-
er, apply tosurface 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 rotating jet.
(with or without detergent). Pre-rinse
vehicle with fresh water. If using Kärch-
erVehicleWash,applytosurfaceat low
pressure. For best results, clean one
side of vehicle at a time and always ap-
ply detergent from bottom to top, do not
allow detergent to dry on surface. If
needed, use special wash brush attach-
ment to remove stubborn dirt. Rinse at
high pressure in a sweeping motion
keepingthespraynozzleapproximately
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
CLEANING TIPS
Deck Cleaning
House Siding
Cement Patios, Brick and Stone
Cars, Boats & Motorcycles

English 13
from left to right. For best results, wipe
surface dry with a chamois or soft dry
cloth.
CAUTION
Do not use rotating jet on vehicles as it
may cause damage.
(with or without detergent). Pre-rinse
cleaning surface with fresh water. If us-
ing Kärcher Pressure Wash or Degreas-
er, apply detergent at low pressure.
Allow Pressure Wash to remain on sur-
face1-3minutes.Donotallowdetergent
to dry on surface. Rinse at high pres-
sure keeping the spray nozzle approxi-
mately 3-6 inches from the cleaning
surface. For removing extremely stub-
born dirt, it may be necessary to move
the spray nozzle even closer to the sur-
face for greater dirt cutting action.
CAUTION
Do not use rotating jet on cloth, plastic
or other sensitive surfaces as it may
cause damage.
(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 needed use special Wash
Brush Attachment to remove stubborn
dirt. Rinse at high pressure in a sweep-
ing motion keeping the spray nozzle ap-
proximately 3-6 inches from the
cleaningsurface.Forbest results,clean
from top to bottom and from left to right.
CAUTION
Do not use rotating jet on patio or lawn
furniture as it may cause damage.
Before cleaning any surface an in-
conspicuousareashouldbecleaned
totest spraypatternand 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-canada.com
Barbecue Grills, Outdoor Power
Equipment & Gardening Tools
Patio & Lawn Furniture
Recommendations

14 English
Optional accessories are available to
further enhance your cleaning capabili-
ties.Theseaccessoriesareaccurateas
of the printing date of this manual.
Please check our website
www.karcher-canada.com 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 that will 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
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

English 15
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
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-Racer. It saves time by
cleaning a 12" wide area gently as it
hovers, providing consistent, streak-
free cleaning. When you finish cleaning
the patio and driveway, remove the
wand and use the handle to clean ga-
rage doors and other vertical surfaces.
Includes two height-adjustable nozzles
which spin at high speed for optimum
results. Our top selling accessory for
Karcher pressure washers up to 2300
PSI. (bayonet)
Part No. 2.640-508.0
25 ft. Pipe Cleaning Kit (bayonet)
Wet Sandblasting Kit (bayonet)
Detergent Foamer Attachment
T-Racer Wide Area Surface
Cleaner

16 English
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) posi- tion
Power cord is not plugged in. Plug in power cord.
Extension cord is too long. Replace extension cord with
either a 25 ft. 12/3 gauge cord
or a 50 ft. 10/3 gauge cord.
Extension cord is not proper
gauge.
Extension cord is damaged.
Electricaloutletdoesnotsupply
adequate power. Try a different outlet.
Unit does not reach
high pressure. Diameter of garden hose is too small. Replace with a 1/2 inch or 5/8 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.
Spray wand is in low pressure
position. Turn spray wand to high pres- sure position.
Output pressure va-
ries 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
triggergununtilasteady flowof
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.

English 17
Call: 1-800-537-4129 for help or visit
our website:
www.karcher-canada.com
No detergent. Detergent suction tube not pro-
perly connected to the machi-
ne.
Check connection.
Detergent is too thick. Dilute detergent, for best resul-
ts 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 pres- sure position.
Discharge nozzle is obstructed. Blow out or remove debris with
fine needle.
Garden hose connec-
tion leaks. Loose fittings. Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Spray wand leaks. Spray wand not properly atta-
ched. 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 Service.
Pump is noisy. Pump is sucking air. Check that hoses and fittings
are air tight. Turn off machine
and purge pump by squeezing
triggergununtil asteadyflow of
water emerges through the
nozzle.
Water leaks from
pump (up to 10 drops
per minute is permis-
sible).
Loose fittings. Check that all fittings are tight.
Water seals are damaged or
worn. Call Customer Service.
Oil Drip. Oil seals are damaged or worn. Call Customer Service.
Symptom Cause Solution
Kärcher Customer Service CDN

18