Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Assembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . .3
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . .4-5
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
Model K 8000 G Part No. 1.187-106.0
High Pressure Washer Operator Manual
Specifications
Operating pressure 3000 PSI
Water volume 2.5 GPM
Engine
7.8 HP Briggs & Stratton Vanguard
K8000G Manual 11/30/01 5:06 PM Page 1
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.
• FIRE HAZARD! Do not add fuel with the
engine running. Do not operate if fuel has
been spilled. Instead move the machine
to a different location and avoid creating
sparks.
• Operate and fuel machine in a well ventilated area, free of devices featuring an
open pilot or flame such as boilers, water
heaters, etc.
• 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.
• 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.
• The machine has hot surfaces which can
cause burns. Operate the unit in a safe
environment and away from children.
• Do not allow the high pressure hose to
come into contact with the muffler guard.
• Do not leave the machine running
unattended.
• Learn how to stop the machine and
release pressure quickly. Be thoroughly
familiar with the controls.
• Stay alert — watch what you are doing.
• 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.
• The Gun Safety Lock PREVENTS the
trigger from accidentally being engaged.
This safety feature DOES NOT lock trigger
in the on position.
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.
• 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.
We strongly recommend that this high
pressure washer not be left running for
periods of 5 minutes or longer without
the trigger gun being engaged.
This Kärcher high pressure washer is
equipped with thermal protection to
extend the life of your pressure washer.
The thermal protector will automatically
activate at a predetermined high temperature ejecting hot water before resetting.
This ensures that the pump does not
become damaged.
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.
Item Description
1. Front Guard
2. High pressure outlet
3. Water inlet
4. Oil fill
5. On/Off Switch (not pictured)
6. Fuel valve (not pictured)
7. Pull start (not pictured)
8. Knob Assembly (two each):
Bolt
Knob
9. High pressure hose
10. Handle
11. Detergent filter
12. Trigger gun safety lock
(not pictured)
13. Trigger gun
14. Detergent suction tube
15. Gas tank
16. Pressure control knob
17. Spray wand
18. Triple jet nozzle
1
NEVER!
MODEL K 8000 G OVERVIEW
Never point nozzle at people or animals.
Never drink alcohol or use drugs while operating this equipment.
Never
spray electrical connections, electrical outlets or fixtures.
Never add
fuel with the engine running or operate where fuel has been spilled.
Never
touch hot surfaces or allow accessories to contact hot surfaces.
Never
operate in an enclosed space, exhaust fumes are dangerous.
Never
operate near utilities with open flames.
Never
operate without the water turned on and never use hot water.
12
11
4
18
14
7
8
13
1
10
9
15
17
16
3
2
6
5
K8000G Manual 11/30/01 5:06 PM Page 2
4
Step 6
Turn fuel valve
on.
Step 7
Slide the throttle control to the fast position. Move
the choke lever to the “CHOKE” position (only if the engine is
cool). After starting, move the choke to “RUN”.
OPERATING INSTRUCTIONS
Step 1 Connect the high pressure hose
to the unit’s high pressure outlet.
Step 3 Connect garden
hose to the cold water
source and turn water on
completely.
Step 2 Connect garden hose to unit’s
water inlet.
Step 4 Trigger the gun
to eliminate trapped air,
wait for a steady flow of
water to emerge from the
spray nozzle.
Step 5
Turn the engine on (I).
Tools required: adjustable pliers.
3
ASSEMBLY INSTRUCTIONS
Step 1
Attach the handle to the frame of
the pressure washer. Align holes, insert bolt,
and tighten with knob.
Step 3
Attach the triple jet nozzle to the
spray wand.
Step 4
Attach the spray wand to the
trigger gun.
Step 2
Attach high pressure hose to
trigger gun.
Step 5
Check oil level. Oil level should be
to 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.)
Step 6
Fill gas tank with unleaded
gasoline. Do not use leaded gasoline.
Important!
Do not run the engine
with a high or low oil level as this can
cause engine damage. If you have fur-
ther questions regarding the engine,
please refer to the engine’s operating
manual included with the unit.
K8000G Manual 11/30/01 5:06 PM Page 4
65
WORKING WITH DETERGENT
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
Step 1 To apply detergents the triple jet
nozzle must be set to the “CHEM” position.
Step 2 Fill a container with Karcher
detergent. Place the filter end of detergent
suction tube into the container.
Step 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 surface.
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.
Detergents can only be applied in the “CHEM” setting.
USING THE ACCESSORIES
The triple jet nozzle must be positioned to one of the two settings for high pressure cleaning
by turning the nozzle tip. The pencil jet spray (0º) should be used for stubborn dirt. The High
pressure flat spray (25º) should be used for cleaning over a large surface area. The third setting on the triple jet nozzle is used for the application of detergents.
OPERATING INSTRUCTIONS
- continued
Step 9 Adjust pressure control to
desired setting.
Step 8
Pull the starter handle. If the
engine fails to start after 3 pulls squeeze the
trigger gun to release pressure, and repeat
step 8.
WARNING TO AVOID SERIOUS INJURY, NEVER POINT SPRAY NOZZLE AT
YOURSELF, OTHER PERSONS OR ANIMALS
High pressure
pencil jet cleaning.
High pressure
fan spray cleaning.
Low Pressure detergent
application “CHEM” position.
K8000G Manual 11/30/01 5:06 PM Page 6
CLEANING TIPS
87
SHUTTING DOWN & CLEAN-UP
Step 1 Remove
detergent suction tube
from container and insert
into one gallon of fresh
water. Siphon water at low
pressure for one minute.
Step 2
Turn off (O) the
engine.
Step 3
Turn off the fuel
valve.
Step 4
Turn off the
water source.
Step 5 Press
trigger to release water
pressure.
Step 6 Disconnect the garden
hose from the water inlet. Disconnect
the high pressure hose from the high
pressure outlet.
Step 7 Engage the
gun safety lock.
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. Drain the gas and oil from the engine.
4. Do not allow high pressure hose to
become kinked.
5. Store the machine and accessories in
a room which does not reach freezing
temperatures. The machine should not be
placed near an open flame i.e. furnace,
hot water heater etc.
Caution: Failure to follow the above directions will result in damage to the pump
assembly and accessories.
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 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.
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. Rinse at high pressure from top to
bottom in an even sweeping motion keeping the spray nozzle approximately 6 inches
from the cleaning surface.
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.
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. Rinse at high pressure in a sweeping
motion keeping the spray nozzle approximately 8 inches from the cleaning surface
(distance should increase when rinsing pinstriping 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.
TAKING A BREAK... five minutes or more
Step 1 Turn off (O)
the engine.
Step 3 Engage gun
safety lock.
Step 2 Press trigger
to release water pressure.
K8000G Manual 11/30/01 5:06 PM Page 8
TROUBLESHOOTING
109
Symptom Cause Solution
Engine will not
start
Unit does not reach
high pressure.
Output pressure
varies high and low.
No gasoline. Fill gas tank.
Choke is not in correct
position.
Slide choke lever to “CHOKE”
position.
Low oil level. Add oil.
Engine throttle is not in
correct position.
Position the throttle to “FAST”.
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.
Nozzle is in “CHEM”
position.
Turn nozzle to high pressure position.
Not enough inlet water supply. Turn wate r o n f ull 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.
Pressure built up in the
high pressure washer.
Squeeze the trigger to release the
pressure.
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 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.
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.
Rinse at high pressure in a sweeping motion
keeping the spray nozzle approximately 6
inches from the cleaning surface. For best
results, clean from top to bottom and from
left to right.
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.
Use extreme caution when cleaning decks,
siding, and other sensitive surfaces as the
pencil jet may cause damage if not used
correctly.
OPTIONAL CLEANING ACCESSORIES
Optional cleaning accessories are available to further enhance your cleaning capabilities.
Call
Kärcher
customer service hotline (1-800-537-4129) for details.
For additional
engine problems
refer to the engine
owners manual.
K8000G Manual 11/30/01 5:06 PM Page 10
11
Karcher Customer Support USA
1-800-537-4129
Karcher Customer Support USA
1-800-537-4129
TROUBLESHOOTING
- continued
If you encounter any additional
difficulties not listed, please call
our service center for help.
Symptom Cause Solution
No detergent.
Garden hose
connection leaks.
Triple jet nozzle or
Spray wand 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 nozzle is in high
pressure position.
Turn spray nozzle tip to ”CHEM”
position.
Discharge nozzle is
obstructed.
Blow out or remove debris with a
fine needle.
Loose fitting. Tighten fittings.
Missing/worn rubber washer. Insert new washer.
Nozzle or spray wand not
properly attached.
Broken “o”-ring.
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.
Thermal protection device will
automatically reset.
Thermal protection device
has been activated.
Call Kärcher customer service
hotline and order “o”-ring.
Pump is sucking air.
Oil seals are damaged or
worn.
Call service center.
Tighten connections
Detergent suction tube not
properly connected to the
machine.
Check connection.
K8000G Manual 11/30/01 5:06 PM Page 12
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