Model K205 M Plus
Part No. 1.223-820.0
High Pressure Washer Operator Manual
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . .3
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . .4
GFCI Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
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
Operating pressure 1300 PSI
Water volume
Voltage
Amp draw
1.3 GPM
120 V
14 AMPS
In USA Call:
1-800-537-4129
or visit our website:
IMPORTANT PRECAUTIONS – Read First!
Extension Cords
Safety Warnings
Use a sufficient gauge: Up to 25 ft = 12/3
When using this product, basic precau-
tions should always be followed:
AWG; 25 to 50 ft = 10/3 AWG. Use only
extension cords that are intended for
outdoor use. These extension 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
rating of the product. Do not use damaged
extension cords. Examine extension cord
before using and replace if damaged. Do
not abuse extension cord and do not yank
on any cord to disconnect. Keep cord away
from heat and sharp edges. Always
disconnect the extension cord from the
receptacle before disconnecting the
product from the extension cord. If you are
using an extension cord, it should always
be completely unwound from the cable
drum.
• Read all the instructions before using
the product.
• 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.
• To reduce the risk of injury, do not
operate the machine near children.
• Learn how to stop the machine and
release pressure quickly. Be thoroughly
familiar with the controls.
• Stay alert — watch what you are doing.
• Wear safety goggles.
• Do not use acids,
solvents, or any
flammable material in this product.
These products can cause physical
injuries to the operator and irreversible
damage to the machine.
Ground Fault Circuit Interrupter
(GFCI) Protection
• Do not operate the product when
fatigued or under the influence of
alcohol or drugs.
2
This unit is supplied with a portable
Ground Fault Circuit Interrupter (GFCI).
UL indicates that the power cord has been
investigated for compliance with the
applicable provisions of UL 943, Third
Edition (Standard for Ground Fault Circuit
Interrupters) and other applicable
standards. If power is interrupted in the
line, the GFCI will automatically reclose
the circuit to the load after power is
restored. Depending on the GFCI model,
it may be necessary to manually operate
the reset button to restore power to the
GFCI load circuit.
• Do not stand on unstable surfaces.
Stand with both feet balanced at all
times.
• To reduce the risk of electrocution, keep
all connections dry and off the ground.
Do not touch plug with wet hands.
• The Gun Safety Lock PREVENTS
the trigger from accidentally being
engaged. This safety feature DOES
NOT lock trigger in the on position.
Caution
•
•
Follow the maintenance instructions
specified in the manual.
This machine has been designed
for use with cleaning detergent sup-
plied or recommended by the manu-
facturer. The use of other cleaning
detergents may affect the operation
of the machine and void the warran-
ty.
IMPORTANT PRECAUTIONS – continued
Water Supply
(Cold Water Only)
• Water hose must be at least 3/4 inch
in diameter.
• 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.
• 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.
• Always prevent debris from being drawn into
the unit by using a clean water source.
ASSEMBLY INSTRUCTIONS
3
Step1 Insert the hook of
Step2 Slide the two han-
dle posts into the wheel
Step3 Slide the handle
the lower part of each wheel
onto the two handle posts and
line up the holes. Insert each
of the two short screws and
tighten.
bracket into the slot located at brackets and line up the
the bottom of the unit, then
slide the upper hook into the
slot located at the top of the
unit until it snaps into place.
holes. Insert each of the two
long screws and tighten.
Step4 Pull out the locking Step5 Connect the
Step6 Insert the Spray
Wand Extension into the trig-
ger gun. Press in against the
spring tension and twist into
the lock position. Turn the
Spray Wand Extension Collar
clockwise until tight.
slide from the right side of
the trigger gun handle, and
insert the small end of the
high pressure hose into
detergent suction tube to
the pressure washer.
place. Push the locking slide
back into the trigger gun to
lock the hose in position.
OPERATING INSTRUCTIONS
Step2 Insert the spray wand of your
choice into the spray wand
extension. Push in and turn clockwise
to lock spray wand in place.
Step1 Connect the high pressure hose to the
unit’s high pressure outlet.
4
Step3 Connect garden hose to unit’s
water inlet.
Step4 Connect garden hose to the
cold water source and turn water on
completely.
Step5 Plug the power cord into the power out-
let. Press “TEST”, then press “RESET” to assure
proper connection to power. Trigger the gun to
eliminate trapped air, wait for a steady flow of
water to emerge from the spray nozzle.
Step6 Turn on (I) the pressure
washer. The motor starts only if the
trigger of the gun is pulled and shuts off
when the trigger is released.
GFCI INSTRUCTIONS
Note:
The actual
appearance
of the GFCI
may be
different from
this
illustration.
Step1
Plug the Ground
Fault Circuit Interrupter (GFCI)
into a working outlet.
Step2
Press “TEST”, then
press “RESET” to assure proper
connection to power.
USING THE ACCESSORIES
High/low spray wand
The High/low spray wand allows you to adjust the cleaning pressure. To clean at maximum
pressure, the High/low wand must be positioned to the high pressure setting (+).
To apply detergent, the wand must be positioned to the low pressure setting (-).
5
For higher pressure turn wand
tip to the plus (+) position.
For lower pressure turn wand
tip to the minus (-) position.
Dirtblaster® spray wand
Wash brush
This wand features a 0º pencil jet which rotates 360º
for maximum dirt cutting action, effectively increasing
cleaning performance up to 50%. This wand combines
the cleaning performance of a 0º pencil jet with the
surface coverage of a wide angle nozzle.
This brush is ideal for removing stub-
born dirt and stains from finished sur-
faces. Use with detergents only.
Not recommended for soft materials, siding, painted
surfaces, decks or autos.
WARNING
TO AVOID SERIOUS INJURY,
NEVER POINT SPRAY NOZZLE AT
YOURSELF, OTHER PERSONS OR
ANIMALS
WORKING WITH DETERGENT
Karcher Pressure washers operate at two pressures. The high pressure setting is used for
cleaning, you cannot apply detergents when working at high pressure. To apply detergents you
must be operating at low pressure.
For best results see Cleaning Tips
on pages 8 & 9 for specific informa-
tion on how to clean
different surfaces.
Step1 To apply detergents Install the
Wash brush or the high/low spray wand.
Push in and turn clockwise
to lock into position.
Then set wand tip
to the low pressure
Always Use Karcher
Detergents for Best Results.
Karcher biodegradable detergents are
specially formulated to protect the environ-
ment and your pressure washer. The special
formula won’t clog the suction tube filter
and will protect the internal parts of the pres-
sure washer for a longer life. For Karcher
Detergents, check your retailer
setting (-).
6
or call:
In USA Call:
1-800-537-4129
or visit our website:
The following Karcher detergents are
available:
Step2 Fill a container with Karcher
detergent. Place the filter end of detergent
suction tube into the container.
• Vehicle Wash
• Degreaser
• House Wash
• Deck Wash
• 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.
Step3 Turn on the pressure washer.
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-
tergent suction tube from
container and insert into
1 gallon of fresh water.
Siphon water at low pres-
sure for one minute.
Step2
Step3
Turn off the water
source.
Step4
Press trigger to
release water
pressure.
Turn the switch to
off (O) position
and unplug cord
from outlet.
7
Step5 Disconnect the
garden hose from the
water inlet on the unit.
Step6 Disconnect the high pressure hose from the
high pressure outlet and engage the gun safety lock.
TAKING A BREAK... five minutes or more
Step1
Engage gun
safety lock.
Step2
Turn pressure
washer to off (O)
position.
WINTERIZING AND 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. Do not allow high pressure hose to
become kinked.
4. Store the machine and accessories in
a room which does not reach freezing
temperatures.
Caution: Failure to follow the above
directions will result in damage to the
pump assembly and accessories.
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® Wand.
Caution: Do not use Dirtblaster® wand 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. If needed, use special Wash
Brush Attachment to remove stubborn dirt.
Rinse at high pressure in a sweeping
motion keeping the spray nozzle approx-
imately 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,
(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.
wipe surface dry with a chamois or
soft dry cloth.
Caution: Do not use Dirtblaster® wand on
vehicles as it may cause damage.
Caution: Do not use Dirtblaster® wand 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. 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 from
top to bottom and from left to right. Caution:
Do not use Dirtblaster® wand on patio or
lawn furniture as it may cause damage.
(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, wheel barrels or other
non-sensitive metal surfaces, you may
want to use the Kärcher Dirtblaster® Wand.
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® wand on
cloth, plastic or other sensitive surfaces as it
may cause damage.
9
• If painted surfaces are pealing 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.
• Wash Brush
• Telescopic Spray Wand
• Pipe Drain Cleaner
• House Washing Wand
• Extension Wand
• Dirtblaster® Wand
• Flexible Spray Wand
• Underbody Spray Wand
• Detergent Foamer Attachment
• Water Suction Hose
• Extension Hose 25’
• Rotating wash brush
In USA Call:
1-800-537-4129
TROUBLESHOOTING
Disconnect the machine from the power source before making any repair.
Symptom
Cause
Solution
On/Off switch is in the
“OFF” (O) position.
Turn switch to the “ON” (I) position.
Motor will not start.
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.
Electrical outlet does not
supply adequate power.
Try a different outlet.
Ground Fault Circuit
Reset breaker (power supply)
Interrupter (GFCI) tripped. or GFCI.
Replace with a 3/4 inch
garden hose.
Diameter of garden hose
is too small.
Unit does not reach
high pressure.
Water supply is restricted. Check garden hose for kinks,
leaks and blockage.
10
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
pressure position.
Not enough inlet water
supply.
Turn water on full force. Check garden
hose for kinks, leaks or blockage.
Output pressure
varies high and
low.
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
Detergent suction tube not Check connection.
properly connected to the
machine.
No detergent.
Detergent is too thick.
Dilute detergent, for best results
use Kärcher detergent.
Filter on detergent suction Run warm water through filter
tube is clogged.
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.
Detergent container is empty. Add more detergent.
Loose fittings. Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Garden hose
connection leaks.
11
Spray wand not
properly attached.
Insert the spray wand of your choice into
the the wand extension. Push in and
turn clockwise to lock wand in place.
Spray wand
or Spray wand
extension leaks.
Spray wand extension
not properly attached.
Insert the spray wand extension into
the trigger gun. Press in against the
spring tension and twist into the lock
position. Turn the spray wand exten-
sion collar clockwise until tight..
Broken o-ring.
Call Kärcher customer service
hotline and order an o-ring.
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.
Pump is noisy.
Loose fittings.
Check that all fittings are tight.
Call service center.
Water leaks
from pump.
Water seals are
damaged or worn.
Oil seals are damaged
or worn.
Call service center.
Oil Drip.
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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