G4000OH
Karcher G4000OH User Manual [en, es, fr]
G 4000 OH
English 2
Español 18
Français 35
9.139-223.0 12/07
HIGH PRESSURE WASHER OPERATOR MANUAL
Model Overview 3
Important Safety Instructions 4
Assembly Instructions 6
Operating Instructions 8
Using the Accessories 9
Working with Detergents 10
Taking a Break 11
Shutting Down & Clean-Up 11
Winterizing and Long-Term Storage 11
Maintenance Instructions 12
Cleaning Tips 13
Troubleshooting 15
Specifications
Max. Pressure* 4000 PSI
Max. Water Flow* 3.6 GPM
Detergent suction 0.15 - 0.20 GPM
Engine 389cc
Honda GX 390
Part No. 1.194-800.0
1.194-801.0
Serial no.
Safety Alert Symbols
DANGER
indicates “an imminently hazardous situation which, if not avoided, will result in
death or serious injury.”
WARNING
indicates “a potentially hazardous situation which, if not avoided, could result in
death or injury.”
CAUTION
indicates “a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury or in property
damage incidents.”
Owner/User Responsibility
The owner and/or user must have an
understanding of the manufacturer’s
operating instructions and warnings before using this pressure washer.
Warning information should be emphasized and understood.
If the operator is not fluent in English,
the manufacturer’s instructions and
warnings shall be read to and discussed
with the operator in the operator’s native
language by the purchaser/owner, making sure that the operator comprehends
its contents.
Owner and/or user must study and
maintain for future reference the manufacturers’ instructions.
Kärcher Customer Support
USA and Canada
Call: 1-800-537-4129 for help or visit
our website:
www.karcherresidential.com
Please take a moment to register your
pressure washer online at:
www.karcherresidential.com/warranty
Kärcher Customer Support
Mexico
Call: 01-800-024-13-13 for help or visit
our website: www.karcher.com.mx
* Max. Pressure and Max. Water Flow
determined in accordance with PWMA
Standard PW101-8/01
2 English
1 Handle
2 Trigger gun
3 Trigger gun safety lock
4 High pressure hose
5 Gas tank
6 Remote pressure control
7 Dipstick
MODEL OVERVIEW
8 Water inlet with garden hose
connector
9 Water inlet filter
10 High pressure outlet
11 Detergent suction tube with filter
12 Quick connect nozzles
For engine details see engine manual.
English 3
IMPORTANT SAFETY INSTRUCTIONS
Read the operating instructions of
the engine manufacturer before
start-up and follow the safety instructions carefully.
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 product is used near children.
Know how to stop the product and
bleed pressures quickly. Be thoroughly familiar with the controls.
Stay alert – watch what you are doing.
Do not operate the product when fa-
tigued or under the influence of alcohol 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 Severe Injury to
Persons – Keep Clear of Nozzle –
Do Not Direct Discharge Stream At
Persons. This machine is to be used
only by qualified operators.
High pressure jets can be dangerous
if misused. The jet must not be directed at persons, 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
To avoid risks, all repairs and re-
placement of spare parts may only
be carried out by authorized customer service personnel.
Set the pressure reducer on the
compressor to 25 psi before correcting the tire pressure.
Tire pressure should not exceed
max. 25 psi.
CAUTION
Risk of Asphyxiation – Use this product only in a well ventilated area.
Operate and fuel machine in a well
ventilated area, free of devices featuring 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 creating sparks.
The machine has hot surfaces which
can cause burns. Operate the unit in
4 English
a safe environment and away from
children.
Do not touch hot surfaces or allow
accessories to contact hot surfaces.
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
WATER SUPPLY
(Cold Water Only)
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 connected directly to the
public drinking water supply. This is
to ensure that there is no feedback of
chemicals into the water supply. Direct connection via a receiver tank or
backflow preventer, for example, is
permitted.
Dirt in the feed water will damage the
unit. To avoid this risk, we recommend fitting a water filter.
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.
Garden hose must be at least 5/8
inch in diameter.
Flow rate of water supply must not
fall below 4.0 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-
English 5
ASSEMBLY INSTRUCTIONS
STEP 1:
Î
Prior to initial startup, put engine oil
(provided in bottle) in engine before
starting the engine.
For engine details see engine
manual.
Î STEP 2:
Mount the nozzle holder with enclosed nylon rivets to the handle.
Î STEP 3:
Attach the handle to the frame of the
pressure washer. Align holes, insert
bolts, and tighten with knobs.
Î STEP 4:
Place the quick connect nozzles in
the nozzle holder.
Î STEP 5:
Mount the hose hanger.
Î STEP 6:
Mount the gun holder.
6 English
Î STEP 7:
Attach the wand to the trigger gun.
(or remote pressure control for
1.194-801.0)
Î STEP 8:
Pull the spring-loaded collar of the
wand back to insert your choice of
quick connect nozzle.
Î STEP 9:
Release the collar and push the nozzle until the collar clicks.
Pull the nozzle to make sure it is
seated properly before operating
your unit.
Î STEP 10:
Attach the high pressure hose to the
trigger gun.
Î STEP 11:
Lock the safety lock.
Î STEP 12:
Adjust working pressure and water
volume by turning the Remot Pres-
sure Control either direction.
Always return the control to the high-
est setting before shutting the pres-
sure washer off.
(For model 1.194-801.0 only)
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.
English 7
OPERATING INSTRUCTIONS
CAUTION
Engine shipped without oil. Before starting engine, fill with oil. Do not over-fill.
Do not run the engine with a high or low
oil level as this can cause engine damage.
If you have further questions regarding
the engine, please refer to the engine
manual included with the unit.
Î STEP 1:
Check engine oil level. Oil level
should be level with the bottom of the
oil filler neck.
Be sure the machine is level when
checking the oil level. (Refer to the
engine’s operating manual for seasonal grades.).
We recommend that the oil be
changed after the first 5 hours of
use, then once every 50 hours.
Î STEP 2:
Fill gas tank with unleaded gasoline.
Do not use leaded gasoline.
Î STEP 3:
Connect the high pressure hose to
the unit’s high pressure outlet.
Î STEP 4:
Connect garden hose to unit’s water
inlet.
Î STEP 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.
Î STEP 7:
Initial Start:
Open fuel valve.
Set choke lever to the CLOSED position.
Starting a Warm engine:
If the engine has run out of fuel, set
choke lever to the CLOSED position
after refueling. If the engine has not
run out of fuel, leave the choke lever
in the OPEN position.
Î STEP 8:
Move the engine stop switch to the
ON position.
For engine details see engine manual.
Î STEP 9:
Pull the starter handle.
If the engine fails to start after
3 pulls, squeeze the trigger gun to
release pressure, and repeat step.
After the engine warms up enough to
run smoothly, move choke leaver to
OPEN position.
Î STEP 5:
Connect garden hose to the cold water source and turn water on completely.
Do not use hot water.
8 English
USING THE ACCESSORIES
Quick connect nozzles
The color-coded quick connect nozzles
provide a wide array of spray widths
from 0° to 65° and are easily accessible
when placed in the convenient nozzle
holder.
0° spray angle = Red nozzle
For particularly stubborn accumulation
of grime. Not recommended for soft
materials like sidings, decks, painted
surfaces, cars.
15° spray angle = yellow nozzle
For dirt accumulation over a surface.
25° spray angle = Green nozzle
For dirt accumulation over a large surface.
40° spray angle = White nozzle
For moderate dirt accumulation over a
large surface.
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 8 and Step 9)
WARNING
To avoid serious injury never point
spray nozzle at yourself, other per-
sons or animals.
65° spray angle = Black detergent
nozzle
For operating with detergent or cleaning
with low pressure.
English 9
WORKING WITH DETERGENTS
Detergents can only be applied with
the black detergent nozzle.
Î STEP 1:
Install the black detergent nozzle for
detergent application (will work at
low pressure only).
Î STEP 2:
Adjust the filter end of the detergent
tube for light (- / 0.15 gpm), or maximum (+ / 0.20 gpm)
Î STEP 3:
Fill a container with Kärcher detergent. Place the filter end of detergent
suction tube into the container.
Î STEP 4:
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 surface.
Î STEP 5:
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.
Detergents
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 warranty.
Always Use Kärcher Detergent for
Best Results
Kärcher biodegradable detergents are
specially formulated to protect the environment and your pressure washer. The
special formula won’t clog the suction
tube filter and will protect the internal
parts of the pressure washer for a longer life. For Kärcher Detergents, check
your retailer or visit our website:
www.soappac.com
10 English
Kärcher detergents available in
USA / Canada:
– All Purpose Cleaner
– Exterior House Cleaner
– Deck & Patio Cleaner
– Degreaser
– Vehicle Wash and Wax
TAKING A BREAK ..five min-
utes or more
Î STEP 1:
Move the engine stop switch to the
OFF position.
For engine details see engine manual.
Î STEP 2:
Release trigger and engage gun
safety lock.
SHUTTING DOWN & CLEAN-
UP
Î STEP 1:
Remove detergent suction tube from
container and insert into 1 gallon of
fresh water.
Siphon water at low pressure for one
minute.
Î STEP 4:
Press trigger to release water pressure.
Î STEP 5:
Release trigger and engage gun
safety lock.
Î STEP 6:
Disconnect the garden hose from
the water inlet on the unit.
Î STEP 7:
Disconnect the high pressure hose
from the high pressure outlet.
Î STEP 2:
If you have regulate the Pressure
Control, always return the control to
the highest setting before shutting
the pressure washer off.
Move the engine stop switch to the
OFF position.
Close the fuel valve.
Î STEP 3:
Turn off the water source.
English 11
WINTERIZING AND LONG-TERM STORAGE
1: Disconnect all water connections.
Î
Î 2: Turn the fuel valve and the engine
stop switch to the CLOSED or OFF
position. Pull the starter handle several times until the remaining water
has exited the pump.
Î 3: Do not allow high pressure hose
to become kinked.
Î 4: 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.
MAINTENANCE INSTRUCTIONS
Kärcher pump
Initial Use
All Kärcher pumps ship with oil already
inside direct from the factory. There is
no need to add oil.
Pump Inspection
You should routinely make a visual inspection of the pressure washer’s
pump. If you notice oil leaking around
the pump seals, you should take the
pressure washer to a Kärcher-Authorized Service Center for repair. (You
can locate a service center in the USA
or Canada online
www.karcherresidential.com/service.)
Î 5: Refer to the engine’s operating
manual for preparing the engine for
winter or long-term storage.
CAUTION
Failure to follow the above directions
will result in damage to the pump assembly 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.
Engine
Carry out maintenance tasks for the engine according to the specifications provided in the operating instructions
provided by engine manufacturer.
12 English
CLEANING TIPS
Deck Cleaning
(with or without detergent). Pre-rinse
deck and surrounding area with fresh
water. If using detergent, apply to surface at low pressure. For best results,
limit your work area to smaller sections
of approximately 25 square feet. Allow
detergent 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.
몇 CAUTION
Do not use Dirtblaster spray nozzle
on wood surface as it may cause
damage.
keeping the spray nozzle approximately
6 inches from the cleaning surface.
몇 CAUTION
Do not use Dirtblaster spray nozzle
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 detergent or Degreaser, apply to
surface at low pressure. For best results, limit your work area to smaller
sections of approximately 25 square
feet. Allow detergent 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 the cleaning surface.
Always clean from top to bottom and
from left to right. For removing extremely stubborn stains, use the Dirtblaster®
Nozzle.
House Siding
(with or without detergent). Pre-rinse
cleaning surface with fresh water. If using detergent, 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 detergent 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 (not included) to remove stubborn
dirt. Rinse at high pressure from top to
bottom in an even sweeping motion
Cars, Boats & Motorcycles
(with or without detergent). Pre-rinse
vehicle with fresh water. If using detergent, 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 (not included) 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
English 13
from left to right. For best results, wipe
surface dry with a chamois or soft dry
cloth.
몇 CAUTION
Do not use Dirtblaster spray nozzle
on vehicles as it may cause damage.
Barbecue Grills, Outdoor Power
Equipment & Gardening Tools
(with or without detergent). Pre-rinse
cleaning surface with fresh water. If using detergent or Degreaser, apply detergent at low pressure. Allow 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.
몇 CAUTION
Do not use Dirtblaster spray nozzle
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 detergent, apply to
surface at low pressure. Allow detergent
to remain on surface 1-3 minutes. Do
not allow detergent to dry on surface. If
needed use special Wash Brush Attachment (not included) 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.
몇 CAUTION
Do not use Dirtblaster spray nozzle
on patio or lawn furniture as it may
cause damage.
CAUTION
Before cleaning any surface an in-
conspicuous area should be cleaned
to test spray pattern and distance for
maximum cleaning results.
If painted surfaces are peeling or
chipping, use extreme caution as
pressure washer may remove the
loose paint from the surface.
When using on surfaces which might
come in contact with food, flush sur-
faces with plenty of drinking water.
For additional cleaning tips and a
complete video library, visit our web-
site:
www.karcherresidential.com
Optional Accessories
Optional accessories are available to
further enhance your cleaning capabilities. Please check our website for USA
and Canada
www.karcherresidential.com for pricing
and up-to-date information.
14 English
TROUBLESHOOTING
CAUTION
Remove the spark plug cable to prevent
accidental ignition of the engine before
making any repair.
Symptom Cause Solution
Engine will not start No gasoline Fill gas tank
Unit does not reach
high pressure.
Output pressure varies high and low.
Choke is not in the correct
position.
Water pressure built up in
the machine.
For additional engine problems refer to the engine manual.
Diameter of garden hose is
too small.
Water supply is restricted. Check garden hose for kinks,
Not enough inlet water supply.
Water inlet filter is clogged. Remove filter and rinse out in
Black detergent nozzle is
attached.
Remote Pressure Control
regulator not in the highest
setting.
Not enough inlet water supply.
Pump is sucking air. Check that hoses and fittings are
Water inlet filter is clogged. Remove filter and rinse out in
Spray nozzle is obstructed. Blow out or remove debris with a
Calcified gun, hose or
spray wand.
Slide choke lever out to closed
position.
Squeeze the trigger to release
the pressure.
Replace with a 5/8 inch or larger
garden hose.
leaks and blockage.
Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
warm water.
Remove black detergent nozzle
and attach high pressure nozzle
Always return the control to the
highest setting.
Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
air tight. Turn off machine and
purge pump by squeezing trigger gun until a steady flow of water emerges through the nozzle.
warm water.
fine needle.
Run distilled vinegar through de-
tergent suction tube.
English 15
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