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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 venti-

lated 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 temper-
ature ejecting hot water before resetting.
This ensures that the pump does not
become damaged. 

Caution

•  Follow the maintenance instruc-

tions 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.  Triple jet nozzle
2. Spray 

wand

3. Oil 

fill 

cap

4. Gas 

tank

5.  Knob Assembly (two each):

Bolt  
Knob 

6.  Detergent suction tube
7. Detergent 

filter

8.  High pressure hose
9.  Trigger gun safety lock

10. Trigger 

gun

11. Handle
12. Pull start (not pictured)
13. High pressure outlet
14. Front Guard 
15. Water inlet

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NEVER!

MODEL K 5800 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.

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9

4

15

12

5

6

11

1

8

7

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K5800G Manual  11/30/01  5:02 PM  Page 2

Summary of Contents for K5800G

Page 1: ...n 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 5800 G Part No 1 194 103 0 High Pressure Washer Operator Manual Specifications Operating pressure 2300 PSI Water volume 2 5 GPM Engine 5 0 HP Honda K5800G Manual 11 30 01 5 02 PM Page 1 ...

Page 2: ...nto 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...

Page 3: ...TRUCTIONS Step 1 Tilt machine backwards slightly caution oil may leak if tilted too far Attach the front guard to the frame Align holes insert bolt and tighten with lock nut Step 3 Attach the triple jet nozzle to the spray wand Step 4 Attach the spray wand to the trigger gun Step 2 Attach the handle to the frame of the pressure washer Align holes insert bolt and tighten with knob Step 5 Check oil ...

Page 4: ...or 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 Detergents can only be applied in the CHEM setting 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 ...

Page 5: ...on surface Rinse at high pressure in a sweeping motion keeping the spray nozzle approxi mately 3 6 inches from the cleaning sur face 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 suc tion tube directly into cleaning solution and apply to surface at low pressure...

Page 6: ... 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 Symptom Cause Solution Engine will not start Unit does not reach high pressure Output...

Page 7: ...n 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 ...

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