Kärcher G 3025 OH User manual

9.139-202.0 10/06
G 3025 OH
G 3050 OH

2 English
DANGER
indicates “an imminently hazardous sit-
uationwhich,ifnot avoided,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
warningsshallbereadtoand discussed
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.
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: 1-800-537-4129 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
HIGH PRESSURE WASHER OPERATOR MANUAL
Model Overview 3
Important Safety Instructions 4
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
Maintenance Instructions 11
Cleaning Tips 12
Troubleshooting 14
Specifications
Operating pressure 3000 PSI
Water volume 2.5 GPM
Detergent suction 0.15 - 0.20 GPM
Engine 187cc
Honda GC 190
Part No. 1.194-516.0
G 3025 OH
Part No. 1.194-515.0
G 3050 OH
Serial no.
Safety Alert Symbols
Owner/User Responsibility
Kärcher Customer Support USA
Kärcher Customer Service CDN
Kärcher Customer Support Mexico

English 3
1 Handle
2 Trigger gun
3 Trigger gun safety lock
4 High pressure hose
5 Gas tank
6 Spray wand
7 Dipstick
8 Water inlet with garden hose con-
nector
9 High pressure outlet
10 Detergent suction tube with filter
11 Quick connect nozzles
12 Spark plug
13 Water inlet filter
For engine details see engine manual.
MODEL OVERVIEW

4 English
Read the operating instructions of
the engine manufacturer before
start-up and follow the safety instruc-
tions carefully.
WARNING
When using this product basic pre-
cautions 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 doing.
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.
Wear safety goggles.
Follow the maintenance instructions
specified in the manual.
WARNING
Risk of Injection or Injury – Do Not Di-
rect Discharge Stream At Persons.
Highpressurejetscanbedangerous
if misused. The jet must not be di-
rectedatpersons,animals,electrical
devices, or the unit itself.
Do not spray electrical connections,
electrical outlets or fixtures.
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.
WARNING
Gun Kicks Back – Hold with both
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
The engine exhaust from this prod-
uct contains chemicals known to the
State of California to cause cancer,
birth defects or other reproductive
harm.
CAUTION
Risk of Asphyxiation – Use this prod-
uct only in a well ventilated area.
Operate and fuel machine in a well
ventilated area, free of devices fea-
turing an open pilot or flame such as
boilers, water heaters, etc.
CAUTION
Risk of Fire – Do not add fuel when
the product is operating.
Do not operate if fuel has been
spilled. Instead, move the machine
to a different location and avoid cre-
ating sparks.
Themachinehashot surfaceswhich
can cause burns. Operate the unit in
a safe environment and away from
children.
Do not touch hot surfaces or allow
accessories to contact hot surfaces.
IMPORTANT SAFETY INSTRUCTIONS

English 5
Do not allow the high pressure hose
to come into contact with the muffler
guard.
Do not leave the machine running
unattended.
Avoid tipping the machine on its
side.
SAVE THESE INSTRUCTIONS
CAUTION
When connecting the water inlet to
the water supply mains, local regula-
tionsofyourwatercompanymustbe
observed. In some areas the unit
mustnotbeconnecteddirectlytothe
public drinking water supply. This is
toensurethatthereisnofeedbackof
chemicals into the water supply. Di-
rectconnectionvia areceivertankor
backflow preventer, for example, is
permitted.
Dirtinthefeedwaterwill damagethe
unit. To avoid this risk, we recom-
mend fitting a water filter.
Garden hose must be at least 5/8
inch in diameter.
Flow rate of water supply must not
fall below 2.8 GPM (gallons per
minute).
Flow rate can be determined by run-
ning the water for one minuteinto 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. Use additional water
filter.
Do not operate pressure washer
without the water turned on.
WATER SUPPLY
(Cold Water Only)

6 English
ÎSTEP 1:
Attach the handle to the frame of the
pressure washer. Align holes, insert
bolts, and tighten with knobs.
ÎSTEP 2:
Mount the gun/hose storage handle.
ÎSTEP 3:
Mount the nozzle holder with en-
closed nylon rivets to the handle.
ÎSTEP 4:
Place the quick connect nozzles in
the nozzle holder.
ÎSTEP 5:
Attach the wand to the spray gun.
ÎSTEP 6:
Pull the spring-loaded collar of the
wand back to insert your choice of
quick connect nozzle.
ÎSTEP 7:
Release the collar and push the noz-
zle until the collar clicks.
WARNING
High pressure in nozzle area.
Risk of injury caused by improperly
locked nozzle.
Make sure you hear a ‘click’ when in-
serting the nozzle tip into the wand.
Pull the nozzle to make sure it is
seated properly before operating
your unit.
ASSEMBLY INSTRUCTIONS

English 7
ÎSTEP 8:
Attach the high pressure hose to the
spray gun.
CAUTION
Do not run the engine with a highor low
oil level as this can cause engine dam-
age.
If you have further questions regarding
the engine, please refer to the engine
manual included with the unit.
ÎSTEP 1:
Check oil level. Oil level should al-
ways be between the “FULL” and
“ADD” marks on the dipstick.
Be sure the machine is level when
checking the oil level. (Refer to the
engine’s operating manual for sea-
sonal grades.).
We recommend that the oil be
changed after the first 5 hours of
use, then once every 25 hours.
ÎSTEP 2:
Fill gas tank with unleaded gasoline.
Do not use leaded gasoline.
Do not add oil to the gasoline.
ÎSTEP 3:
Connect the high pressure hose to
the unit’s high pressure outlet.
ÎSTEP 4:
Connect garden hose to unit’s water
inlet.
ÎSTEP 5:
Connect garden hose to the cold wa-
ter source and turn water on com-
pletely.
Do not use hot water.
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:
Pull the choke rod to the CLOSED
position.
Starting a Warm engine:
If the engine has run out of fuel, set
choke rod to the CLOSED position
after refueling. If the engine has not
runout offuel, leavethechokerod in
the OPEN position.
ÎSTEP 8:
Engine with manual throttle:
Slidethethrottle lever away from the
SLOWposition,about1/3of theway
toward the FAST position.
Engine with fixed throttle:
Move the engine stop switch to the
ON position.
For engine details see engine manual.
ÎSTEP 9:
Pull the starter handle.
If the engine fails to start after
3 pulls, squeeze the trigger gun to
release pressure, and repeat step.
Aftertheenginewarmsupenoughto
run smoothly, move choke rod to
OPEN position and throttle to FAST
position.
OPERATING INSTRUCTIONS

8 English
For particularly stubborn accumulation
of grime. Not recommended for soft
materials like sidings, decks, painted
surfaces, cars.
For dirt accumulation over a surface.
For dirt accumulation over a large sur-
face.
For moderate dirt accumulation over a
large surface.
Foroperatingwithdetergentorcleaning
with low pressure.
WARNING
High pressure in nozzle area.
Risk of injury caused by improperly
locked nozzle.
Make sure you hear a ‘click’ when in-
serting the nozzle tip into the wand.
Pull the nozzle to make sure it is
seated properly before operating
your unit.
(See ASSEMBLY INSTRUCTIONS:
Step 6 and Step 7)
WARNING
To avoid serious injury never point
spray nozzle at yourself, other per-
sons or animals.
USING THE ACCESSORIES
Quick connect nozzles
0° spray angle = Red nozzle
15° spray angle = yellow nozzle
25° spray angle = Green nozzle
40° spray angle = White nozzle
65° spray angle = Black detergent
nozzle

English 9
Detergents can only be applied with
the black detergent nozzle.
ÎSTEP 1:
Install the black detergent nozzle for
detergent application (will work at
low pressure only).
ÎSTEP 2:
Fill a container with Kärcher deter-
gent.Placethefilterendofdetergent
suction tube into the container.
ÎSTEP 3:
With the engine running, 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 sur-
face.
ÎSTEP 4:
Always draw fresh water through
the detergent suction tube when the
cleaning job is done, to rinse/flush
any remaining detergents from the
injection system.
For best results see Cleaning Tips
for specific information on how to
clean different surfaces.
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.
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
– All Purpose & Vehicle Cleaner
– Exterior House Cleaner
– Deck & Patio Cleaner
– Heavy Duty Degreaser
– Vehicle Wash
– Pressure Wash
– Deck & Fence Wash
– Degreaser
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
Detergents
Kärcher detergents available in
USA / Mexico:
Kärcher detergents available in
Canada:

10 English
ÎSTEP 1:
Engine with manual throttle:
Move the throttle lever to the SLOW
position. Allow the engine to idle for
a few seconds, then move the throt-
tle lever to the STOP position.
Engine with fixed throttle:
Move the engine stop switch to the
OFF position.
For engine details see engine manu-
al.
ÎSTEP 2:
Release trigger and engage gun
safety lock.
ÎSTEP 1:
Removedetergentsuctiontubefrom
container and insert into 1 gallon of
fresh water.
Siphonwater atlow pressureforone
minute.
ÎSTEP 2:
Engine with manual throttle:
Move the throttle lever to the SLOW
position. Allow the engine to idle for
a few seconds, then move the throt-
tle lever to the STOP position.
Engine with fixed throttle:
Move the engine stop switch to the
OFF position.
ÎSTEP 3:
Turn off the water source.
ÎSTEP 4:
Press trigger to release water pres-
sure.
ÎSTEP 5:
Release trigger and engage gun
safety lock.
ÎSTEP 6:
Disconnect the garden hose from
the water inlet on the unit.
ÎSTEP 7:
Disconnect the high pressure hose
from the high pressure outlet.
TAKING A BREAK ..five minutes or more
SHUTTING DOWN & CLEAN-UP

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.
All Kärcher pumps ship with oil already
inside direct from the factory. There is
no need to add oil.
You should routinely make a visual in-
spection of the pressure washer’s
pump. If you notice oil leaking around
the pump seals, you should take the
pressure washer to a Kärcher-Autho-
rized Service Center for repair. (You
can locate a service center in your area
online at www.karcher-usa.com/ser-
vice.)
The pump on your Kärcher pressure
washer does not require maintenance.
Any attempts to service or alter the
pump may damage your pressure
washer and void your product warranty.
Carry out maintenance tasks for the en-
gine according to the specifications pro-
vided in the operating instructions
provided by engine manufacturer.
WINTERIZING AND LONG-TERM STORAGE
MAINTENANCE INSTRUCTIONS
Kärcher pump
Initial Use
Pump Inspection
Pump Maintenance
Engine

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 spraynozzleapproximately
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.
몇CAUTION
Do not use Dirtblaster spray nozzle
on wood surface 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 (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.
몇CAUTION
Do not use Dirtblaster spray nozzle
on siding as it may cause damage.
(with or without detergent). Pre-rinse
cleaning surface with fresh water. If us-
ingKärcherPressureWashor 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
thecleaning surface.Always cleanfrom
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 vehicle at 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
CLEANING TIPS
Deck Cleaning
House Siding
Cement Patios, Brick and Stone
Cars, Boats & Motorcycles

English 13
clean from top to bottomand from left to
right. For best results, wipe surface dry
with a chamois or soft dry cloth.
몇CAUTION
Do not use Dirtblaster spray nozzle
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-
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.
몇CAUTION
Do not use Dirtblaster spray nozzle
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. Donot 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 3-6 inches
from the cleaning surface. For best re-
sults, clean from top to bottom and from
left to right.
몇CAUTION
Do not use Dirtblaster spray nozzle
on patio or lawn furniture as it may
cause damage.
Before cleaning any surface an in-
conspicuousareashouldbecleaned
totestspray 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
Optional accessories are available to
further enhance your cleaning capabili-
ties. Theseaccessories are accurate as
of the printing date of this manual.
Please check our website www.karch-
er-usa.com/home for pricing and up-to-
date information.
– Extension Hose
– Dirtblaster spray nozzle
– Surface cleaner
Barbecue Grills, Outdoor Power
Equipment & Gardening Tools
Patio & Lawn Furniture
Recommendations
Optional Accessories

14 English
CAUTION
Remove thesparkplugcabletoprevent
accidental ignition of the engine before
making any repair.
TROUBLESHOOTING
Symptom Cause Solution
Engine will not
start No gasoline Fill gas tank
Choke is not in the correct
position. Slide choke lever out to closed position.
Water pressure built up in the
machine. Squeezethetriggertorelease the pressure.
For additional engine problems refer to the engine manual.
Unit does not
reach high
pressure.
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. Turn water on full force.
Check garden hose for kinks,
leaks or blockage.
Water inlet filter is clogged. Remove filter and rinse out in
warm water.
Black detergent nozzle is
attached. Remove black detergent nozzle and attach high
pressure nozzle
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 squeez-
ing 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.
Spray 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 15
If you encounter any additional difficul-
tiesnot listed,pleasecallforhelporvisit
our website.
USA: 1-800-537-4129
www.karcher-usa.com/home
Canada: 1-800-537-4129
www.karcher-canada.com
Mexico: 01-800-024-13-13
www.karcher.com.mx
No detergent. Detergent suction tube not prop-
erly 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 re- place detergent suction tube.
A high pressure nozzle is
attached. Replace with black detergent nozzle.
Spray nozzle is obstructed. Blow out or remove debris
with fine needle.
Garden hose
connection leaks. Loose fittings. Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Spray wand
leaks. Spray wand not properly attached. Turn the swivel nut of the gun clockwise until connection is
tight.
Broken o-ring. 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 squeez-
ing trigger gun until a steady
flow of water emerges
through the nozzle.
Water leaks from
pump (up to 10
drops per minute
is permissible).
Loose fittings. Tighten fittings.
Water seals are damaged or
worn. Call Customer Support
Thermal protection device is
activated. Thermalprotection devicewill auto reset. Do not run pump
for more than 5 minutes with-
out spraying.
Oil Drip. Oil seals are damaged or worn. Call Customer Support
Symptom Cause Solution