Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . .3
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . .4
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
Model K 330 M Part No. 1.994-916.0
High Pressure Washer Operator Manual
Specifications
Operating pressure 1300 PSI
Water volume 1.7 GPM
Voltage 120 V
Amp draw 14 AMPS
1
NEVER!
Model K 330 M OVERVIEW
Item Description
1. Vario Spray wand
2. Spray wand extension
3. Rotating spray wand
4. Wash Brush
5. Trigger gun
6. Trigger gun safety lock
7. High pressure hose
8. Mobile adapter bracket with wheel (qty. 2)
9. Power cord (not pictured)
10. Machine handle
11. Accessory storage
12. On/Off switch
13. Detergent filter
14. Detergent suction tube (not pictured)
15. High pressure outlet
16. Water inlet
17. Package of 4 screws
(not pictured)
2
1
5
3
11
8
13
15
9
16
6
7
10
14
Never point nozzle at people or animals.
Never drink alcohol or use drugs while operating this equipment.
Never operate while standing in water.
Never touch plug with wet hands.
Never let electrical connections rest in water.
Never operate pressure washer without the water turned on
Never use hot water
12
4
2
IMPORTANT PRECAUTIONS – Read First!
Safety Warnings
When using this product basic precautions should always be followed:
• 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
other flammable material in this product. These products can cause physical
injuries to the operator and irreversible
damage to the machine
.
• Do not operate the product when
fatigued or under the influence of
alcohol or drugs.
• Do not stand on unstable surfaces.
Stand with both feet balanced at
all times.
• 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.
Extension Cords
Use a sufficient gauge: Up to 25 ft = 12/2
AWG; 25 to 50 ft = 10/2 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.
Ground Fault Circuit
Interrupter Protection
To comply with the National Electrical
Code (NFPA70) and to provide additional
protection from the risk of electrocution,
this high pressure washer should only be
connected to a receptacle that is protected by a ground fault circuit interrupter
(GFCI). For best results, unit should be
plugged into an unshared outlet.
This Product Is
Double Insulated
In a double-insulated product, two systems of insulation are provided instead of
grounding. No grounding method is provided on a double-insulated product, nor
should a method for grounding be added
to the product. Servicing a double-insulated product requires extreme care and
knowledge of the system, and should be
done only by qualified service personnel.
Replacement parts for a double-insulated
product must be identical to the parts
they replace. A double-insulated product
is marked with the words, “DOUBLE
INSULATED.”
Caution
• Follow the maintenance instructions specified in the manual.
• This machine has been designed
for use with cleaning detergent
supplied or recommended by the
manufacturer. The use of other
cleaning detergents may affect the
operation of the machine and void
the warranty.
You will need a standard screw driver OR a Torx T-25 screw driver
Step 3 Slide the spray wand extension into
the gun. Turn the wand collar onto the gun
threads until tight.
3
ASSEMBLY INSTRUCTIONS
Step 1 Align holes on adapter brackets with
the posts on pressure washer as shown. Tighten
the four screws.
Step 2 Press down to lock handle
onto top of adapter brackets.
Water Supply
(Cold Water Only)
• Water hose must be at least 3/4 inch in
diameter.
• Flow rate of water supply must not fall
below 2.5 GPM (gallons per minute).
• Flow rate can be determined by running
the water for one minute into an empty
5-gallon container.
IMPORTANT PRECAUTIONS
– continued
• 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.
OPERATING INSTRUCTIONS
4
Step 1 Connect the high pressure hose to
the unit’s high pressure outlet.
Step 2 Insert the spray wand of
your choice into the wand extension.
Press in against the spring tension and
twist into the locked position.
Step 3 Connect garden hose to unit’s water
inlet using the quick connect adapter.
Step 4 Connect garden hose to
the cold water source and turn water
on completely.
Step 5 Plug the power cord into the power
outlet. Trigger the gun to eliminate trapped air,
wait for a steady flow of water to emerge from
the spray nozzle.
Step 6 Turn on the pressure
washer (I). The motor starts only if
the trigger of the gun is pulled
and shuts off when the trigger is
released.
USING THE ACCESSORIES
5
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. Not recommended for soft materi-
als, siding, painted surfaces, decks or
autos.
Rotating spray wand
Vario spray wand
This brush is ideal for removing stubborn
dirt and stains from finished surfaces. Use
with detergents only.
Wash brush
WARNING TO AVOID
SERIOUS INJURY, NEVER
POINT SPRAY NOZZLE AT
YOURSELF, OTHER PERSONS
OR ANIMALS
The Vario spray wand allows you to adjust the cleaning pressure. To clean at maximum
pressure, the Vario wand must be positioned to the high pressure setting (+). To apply
detergent, the wand must be positioned to the low pressure setting (-).
For lower pressure turn
wand collar in the minus (-)
direction.
For higher pressure turn
wand collar in the plus (+)
direction.
6
WORKING WITH DETERGENTS
Detergents can only be applied at low pressure (-).
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.
Step 1 Install the Wash brush or the
Vario spray wand. Set the Vario spray wand
to the low pressure setting (-) by turning the
wand collar. The wand must be set in the
low pressure (-) position to apply detergents.
Step 2 Fill a container with Karcher
detergent. Place the filter end of detergent
suction tube into the container.
Step 3 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.
For best results see Cleaning
Tips on pages 8 & 9 for specific
information on how to clean
different surfaces.
Always Use Karcher
Detergents for Best Results.
Karcher biodegradable detergents are
specially formulated to protect the environment and your pressure washer. Special
formula won’t clog the suction tube filter
and will protect the internal parts of the
pressure washer for a longer life.
For
Karcher Detergents, check your retailer
or call:
1-800-537-4129
The following Karcher detergents are
available:
• Vehicle Wash • House Wash
• Degreaser • Deck Wash
• All Purpose Cleaner
SHUTTING DOWN & CLEAN-UP
7
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.
Caution: Failure to follow the above
directions will result in damage to the
pump assembly and accessories.
TAKING A BREAK... five minutes or more
Step 1 Remove de-
tergent suction tube from
container and insert into
1 gallon of fresh water.
Siphon water at low
pressure for one minute.
Step 2
Turn the switch to
off (O) position
and unplug cord
from outlet.
Step 3
Turn off the water
source.
Step 4
Press trigger to
release water
pressure.
Step 5 Disconnect
the garden hose from the
water inlet on the unit.
Step 2
Turn pressure
washer to off (O)
position.
Step 6 Disconnect the high pressure hose from the
high pressure outlet and engage the gun safety lock.
Step 1
Engage gun
safety lock.
8
CLEANING TIPS
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.
Caution: Do not use rotating nozzle
spray wand on wood surface as it may
cause damage.
House Siding
(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 Karcher 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.
Caution: Do not use rotating nozzle
spray wand on siding as it may cause
damage.
Cement Patios,
Brick and Stone
(with or without detergent)
Pre-rinse cleaning surface with fresh water.
If using Karcher 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 Rotating
Nozzle Spray Wand.
Cars, Boats & Motorcycles
(with or without detergent)
Pre-rinse vehicle with fresh water. If using
Karcher 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 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.
Caution: Do not use rotating nozzle
spray wand on vehicles as it may
cause damage.
9
CLEANING TIPS
– continued
Barbecue Grills, Outdoor
Power Equipment &
Gardening Tools
(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 Karcher Rotating Nozzle
Spray Wand.
Caution: Do not use rotating nozzle spray
wand on cloth, plastic or other sensitive
surfaces as it may cause damage.
Patio & Lawn Furniture
(with or without detergent)
Pre-rinse furniture and surrounding area with
fresh water. If using Kärcher All Purpose
Cleaner, place detergent suction tube directly 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 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.
Caution: Do not use rotating nozzle spray
wand on patio or lawn furniture as it may
cause damage.
Recommendations
• Before cleaning any surface an inconspic-
uous area should be cleaned to test spray
pattern and distance for maximum cleaning results.
• If painted surfaces are pealing or chipping,
use extreme caution as pressure washer
may remove the loose paint from the
surface.
OPTIONAL CLEANING ACCESSORIES
• Rotating Wash Brush
• Wash Brush
• House Washing Wand
• Extension Wand
• Rotating Spray Wand
• Flexible Spray Wand
• Underbody Spray Wand
• Telescopic Spray Wand
• Pipe Drain Cleaner
• Floor Washing Tool
• Sandblasting Attachment
• Detergent Foamer Attachment
• Water Pumping Kit
• Water Suction Hose
• Extension Hose 25’
Optional cleaning accessories are available to further enhance your cleaning capabilities:
See accessories order form for product descriptions and ordering instructions.
10
TROUBLESHOOTING
Disconnect the machine from the power source before making any repair.
Symptom Cause Solution
Motor will not start
Unit does not reach
high pressure.
Output pressure
varies high and low.
Extension cord is too long.
Extension cord is not proper
gauge.
Extension cord is damaged.
Replace extension cord with either
a 25 ft. 12/2 gauge cord or a 50 ft.
10/2 gauge cord.
Electrical outlet does not
supply adequate power.
Try a different outlet.
Tripped circuit breaker Reset breaker (power supply) or
ground fault circuit interrupter.
Diameter of garden hose is
too small.
Replace with a 3/4 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.
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.
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.
Spray wand is in low
pressure position.
Turn spray wand to high pressure
position.
11
TROUBLESHOOTING
– continued
Symptom Cause Solution
No detergent.
Garden hose
connection leaks.
Pump is noisy.
Water leaks from
pump (up to 10
drops per minute
is permissible).
Oil Drip.
Detergent is too thick. Dilute detergent, for best results 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.
Loose fittings. Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Spray wand extension not
properly attached.
Broken o-ring or plastic
insert.
Check that hoses and fittings are air
tight. Turn off machine and purge
pump by squeezing trigger gun until
a steady flow of water emerges
through the nozzle.
Loose fittings. Check that all fittings are tight.
Call service center.
Water seals are damaged
or worn.
Call Kärcher customer service
hotline and order repair kit
(part no. 2.883-111.0).
Pump is sucking air.
Oil seals are damaged or
worn.
Call service center.
Spray wand or
Spray wand
extension leaks.
Spray wand not properly
attached.
Insert the spray wand into the spray
wand extension. Carefully press in
against the spring tension and twist
into the locked position.
Slide the spray wand extension into
the gun. Turn the wand collar clockwise onto the gun threads until tight.
Detergent suction tube not
properly connected to the
machine.
Check connection.
If you encounter any additional
difficulties not listed, please call
our service center for help.
Karcher Customer Support USA
1-800-537-4129
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