KARCHER HD 9/21 G Petrol Cold Water Pressure Washer Cleaner Instruction Manual

: June 10, 2024
: Karcher

Table of Contents

Environmental protection
Hazard levels
Device elements
Symbols on the machine
Proper use
Safety instructions
Safety Devices
Operation
Transport
Storage
Care and maintenance
Troubleshooting
Warranty
Accessories and Spare Parts
EU Declaration of Conformity
Technical specifications
References
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KARCHER HD 9/21 G Petrol Cold Water Pressure Washer Cleaner Instruction Manual

Please read and comply with these original instructions prior to the initial operation of your appliance and store them for later use or subsequent owners.

Before first start-up it is definitely necessary to read the operating instructions and safety indications Nr. 5.951- 949.0!
In case of transport damage inform vendor immediately.
Check the contents of the pack before unpacking.

Environmental protection

Recycle Icon The packaging material can be recycled. Please do not throw the packaging material into household waste; please send it for recycling.

Old appliances contain valuable materials that can be recycled; these should be sent for recycling. Batteries, oil, and similar substances must not enter the environment. Please dispose of your old appliances using appropriate collection systems.

Electrical and electronic devices often contain components which could potentially pose a danger to human health and the environment if handled or disposed of incorrectly. However, these components are necessary for the proper operation of the device. Devices marked with this symbol must not be disposed of with regular household rubbish.

Please do not release engine oil, fuel oil, diesel and petrol into the environment Protect the ground and dispose of used oil in an environmentally- clean manner.

Notes about the ingredients (REACH) You will find current information about the ingredients at: www.kaercher.com/REACH

Hazard levels

DANGER
Pointer to immediate danger, which leads to severe injuries or death.

WARNING
Pointer to a possibly dangerous situation, which can lead to severe injuries or death.

CAUTION
Pointer to a possibly dangerous situation, which can lead to minor injuries.

ATTENTION
Pointer to a possibly dangerous situation, which can lead to property damage.

Device elements

HD 9/21 G: Figure 1

HD 9/23 G: Figure 2

Nozzle screws
Nozzle
Spray lance EASY!Lock
Pressure/ quantity regulation
Trigger gun EASY!Force
Safety catch
Trigger
Safety lever
High pressure hose EASY!Lock
Oil tank
Manometer
Dosage valve for detergent
Fuel cock
Device for manual start
Oil drain screw (engine)
Detergent suction hose with filter
Nozzle holder for storing a nozzle
Water filter
Water connection
Oil drain screw pump
Oil sight glass
Storage for spray pipe
High pressure pump
Oil dip (engine)
Motor
Engine switch
High-pressure connection EASY!Lock
Fuel tank
Star knob push handle
Trigger gun storage clip
Hose switch
Push handle
A Union joint
B Filter pot
C O ring
D Filter inlay

Colour coding

The operating elements for the cleaning process are yellow.
The controls for the maintenance and service are light gray.

Symbols on the machine

High-pressure jets can be dangerous if improperly used. The jet may not be directed at persons, animals, live electrical equipment or at the appliance itself.

Risk of burns! Beware of hot components.

Risk of poisoning! Do not breathe in the exhaust fumes.

Symbols Petrol is highly prone to fire hazards and is explosive. Before tanking up, switch off the motor and allow it to cool down.

Symbols The motor exhaust gas contains poisonous carbon monoxide.
Do not run the engine in closed areas.

Symbols Do not fill up when the motor is running.
Do not smoke during fueling.
Do not fill up directly from the can; use a funnel or suitable container

Tape Warning According to applicable regulations, the appliance must never be used on the drinking water net without a system separator. A suitable system separator by KÄRCHER or alternatively a system separator according to
EN 12729 type BA must be used.Water that was flowing through a system separator is considered non-drinkable.

Proper use

High pressure cleaner to clean: Machines, Vehicles, Structures, Tools, Facades, Terraces, Gardening tools, etc.

Cleaning using low pressure jet and detergent (for e.g. for cleaning machines, cars, buildings, tools),
For cleaning using high pressure jet without detergent (for e.g. for cleaning facades, terraces, garden appliances).
For stubborn dirt, we recommend the use of the dirt blaster as a special accessory.

DANGER
Risk of injury! Follow the respective safety regulations when operating at gas stations or other dangerous areas.

Please do not let mineral oil contaminated waste water reach soil, water or the sewage system. Perform engine cleaning and bottom cleaning therefore only on specified places with an oil trap.

Quality requirements for water:

ATTENTION

Only clean water may be used as high pressure medium. Impurities will lead to increased wear and tear or formation of deposits in the appliance.
If recycled water is used, the following limit values must not be exceeded.

pH value	6,5…9,5
electrical conductivity *	Conductivity

fresh water

+1200 μS/cm

< 50 °TH

< 500 ppm (mg CaCO3/l)

Iron| < 0,5 mg/l
Manganese| < 0,05 mg/l
Copper| < 2 mg/l
Active chloride| < 0,3 mg/l
free of bad odours

Maximum total 2000 μS/cm

** Test volume 1 l, settling time 30 min

*** no abrasive substances

Safety instructions

Please follow the national rules and regulations for fluid spray jets of the respective country.
Please follow the national rules and regulations for accident prevention of the respective country. Fluid spray jets must be tested regularly and the results of these tests must be documented in writing.
The appliance/accessories must not be modified.

DANGER

Do not use high pressure cleaners when there has been an oil spill; move the appliance to another spot and avoid any sort of spark formation.
Do not store, spill or use fuel in the vicinity of open flames or appliances such as ovens, boilers, water heaters, etc. that have an ignition flame or can generate sparks.
Keep even mildly inflammable objects and materials away from the muffler (at least 2 m).
Do not start the engine without the muffler; check, clean and replace, if required, the muffler at regular intervals.
Do not use the engine in forest, bushes or grassy areas without fitting a spark receiver at the exhaust
Except for setting jobs, do not run the engine when the air filter is removed or there is no cover over the suction support.
Do not make any adjustments to the regulator springs, regulator bars or other parts that can bring forth an increase in the engine speed.
Risk of burns! Do not touch hot mufflers, cylinders or radiator ribs.
Do not put hands or feet close to moving or rotating parts.
Risk of poisoning! The appliance should not be operated in closed rooms.
Do not use unsuitable fuels, as they may be dangerous.

Safety Devices

Safety devices serve for the protection of the user and must not be put out of operation or bypassed with respect to their function.

Overflow valve

If the hand spray gun is closed, the overflow valve opens and the high pressure pump diverts the water back to the pump suction side. Thus the permissible working pressure is not exceeded.
The overflow valve is set by the manufacturer and sealed. Setting only by customer service.

Safety valve

The safety valve opens when the permissible operating pressure is exceeded (see Technical Data); water flows outside.
The safety valve is set by the manufacturer and sealed. Setting only by customer service.

Thermostat valve

The thermostat valve protects the highpressure pump from unacceptable heating during circuit operation when the trigger gun is closed.

The thermostat valve opens when the permissible water temperature of 80°C is exceeded and lets out the hot water into the open.

Start up

DANGER

Risk of injury! Device, tubes, high pressure hose and connections must be in faultless condition. If they are not in a perfect state then the appliance must not be used.

Installing the pushing handle

_
Figure 3_

Fasten the push handle by means of the fastening screws.

Install hand spray gun, spray lance and nozzle

Note: The EASY!Lock system joins components with a quick-fasten thread solidly and securely with just one turn.

Install hand spray gun

Insert the high pressure nozzle onto the spray lance.
Install union nut and hand-tighten it (EASY!Lock).
Join the spray lance with the trigger gun and tighten until hand-tight (EASY!Lock).
Tighten the screw connection of the spray lance finger tight.
Join the high-pressure hose with trigger gun and high-pressure connection of the appliance and tighten until handtight (EASY!Lock).

Check oil level of the high pressure pump

Check oil level of the high pressure pump at the oil sight glass.
Do not operate the device if the oil level has fallen below the middle of the oil sight glass.
Add oil if required (see technical specifications).
Before using for the first time, cut off the tip of the lid of the oil tank on the water pump.

Motor

Follow the instructions given in the section “Safety Notes”!

Read the operating instructions of the engine manufacturer before start-up and follow the safety instructions carefully.
Check oil level of the engine.
Do not operate the appliance if the oil level has fallen below “MIN”.
If required, top up oil carefully.
Fill the fuel tank with unleaded petrol.
Do not use 2-speed mixture.
E10 fuel may be used.

Refuel

DANGER
Risk of fire and explosion!

Never use the appliance in closed rooms; do not tank up when the engine is hot or running.
Do not smoke during fueling.
Never fill up in the vicinity of open flames or sparks.
Do not spill any fuel – use a funnel.
Wipe up spilled fuel.
After refuelling, properly close the can and tank.
Fill the fuel tank with unleaded petrol.
Do not use 2-speed mixture.

Water connection

For connection values refer to technical specifications.

Connect the supply hose (minimum length 7.5 m, minimum diameter 3/4“) to the water connection point of the machine and at the water supply point (for e.g. a tap).
Open the water supply.

Note: The supply hose is not included.

Suck in water from vessel

DANGER

Never suck water from a drinking water container.
Never suck in liquids which contain solvents like lacquer thinner, petrol or oil. The spray mist of solvents is highly inflammable, explosive and poisonous.

Connect suction hose (minimum diameter 3/4“) with filter (accessory) to the water connection point.
Set dosing value for detergent to “0”.
Remove air from appliance before operation.

Dearating the appliance

Unscrew nozzle screws and remove the nozzle.
Start the engine according to the operating instructions of the engine manufacturer.
Press the lever on the trigger gun many times.
Switch on the appliance and let it run until the water exiting from the spraypipe is bubble-free.
Switch off the appliance and fit the nozzle again.

Operation

**DANGER**
Risk of explosion!
Do not spray flammable liquids.

DANGER

Risk of injury! Never use the appliance without the spray lance attached. Check and ensure proper fitting of the spray lance prior to each use. The screw connection of the spray lance must be finger-tight.
Risk of injury! Hold the hand spray gun and the spray pipe firmly with both hands.
Risk of injury! The trigger and safety lever may not be locked during the operation.
Risk of injury! Contact Customer Service if the safety lever is damaged.
Risk of injury from high-pressure water jet.
Slide the safety catch on the trigger gun forward before performing any work with the appliance.

DANGER

The device generates a high noise level. Risk of hearing impairment. Always use proper hearing protection while working with the device.
Never direct the water jet on to persons, animals, the appliance itself or electrical components.
The operator must wear proper safety gear to be protected against the water sprays.
Pay attention to ensure that all screws of all connecting hoses are tightened properly.

Opening/closing the trigger gun

To open the trigger gun: Actuate the safety lever and trigger.
To close the hand spray gun: Release the safety lever and trigger.

Starting the machine

Open the water supply.

Start the motor with the trigger gun open according to the operating instructions of the motor manufacturer.

Note: The spray lance can be removed to facilitate the start-up process.

Allow motor to warm up for 1 minute.
Release the trigger gun. To do so, push the safety catch towards the back.
Open the hand spray gun.

Set working pressure and flow rate

HD 9/21 G
Set the working pressure and quantity by turning the pressure/ quantity regulation mechanism at the pump unit.

HD 9/23 G

Set (+/-) the working pressure and quantity by turning the pressure/ quantity regulation mechanism at the hand spray gun.

DANGER
When adjusting the pressure/quantity regulation, make sure that the screw connection of the spray lance does not become loose.

Replace the nozzle

DANGER
Switch the appliance off prior to replacing nozzel and activate hand spray gun until device is pressureless.

Secure the trigger gun. To do so, push the safety catch towards the front.
Unscrew nozzle screws and remove the nozzle.
Put on a new nozzle.
Screw on the nozzle screws and tighten them by hand.

Operation with detergent

WARNING
Unsuitable detergents can cause damage to the appliance and to the object to be cleaned. Use only those detergents that have been approved by Kärcher. Observe the dosage and other instructions provided with these detergents. For considerate treatment of the environment use detergent economically.
Follow the safety instructions for using detergents.
Kärcher detergents ensure smooth functioning. Please consult us or ask for our catalogue or our detergent information sheets.

Suspend end of suction hose in a container filled with detergent.
Replace the high-pressure nozzle with the low-pressure nozzle.
Set dosing value for detergent to the desired concentration.
Set dosing valve for detergent to the desired concentration (0%–6%).

Recommended cleaning method

Loosen the dirt:
Spray detergent economically and let it work for 1…5 minutes but do not let it dry up.
Remove the dirt:
Spray off loosened dirt with the high pressure jet.

After operation with detergent

Set dosing value for detergent to “0”.
Open the trigger gun and rinse the device with the motor running for at least 1 minute.

Interrupting operation

Release the lever on the trigger gun.
Note: When the lever of the hand spray gun is released, the engine continues to run at zero speed.
- In case of extended interruptions (several minutes), switch off the engine.
- Activate trigger gun until device is pressure-less.
- Secure the hand spray gun using the safety catch so that it doesn’t open accidentally.

Turn off the appliance

After operating the water using saline water (sea water), open the hand spray gun and rinse the appliance for at least 2 – 3 minutes using tap water.

Close the hand spray gun.
Turn the starter to “0/OFF”.
Close fuel cock.
Shut off water supply.
Activate trigger gun until device is pressure-less.
Secure the trigger gun. To do so, push the safety catch towards the front.
Remove the water inlet hose from the appliance.

Transport

CAUTION
Risk of personal injury or damage! Mind the weight of the appliance during transport.
ATTENTION
Protect the trigger from damage during transport.

Coil the high-pressure hose and hang it over the hose storage.
Insert the spray lance into the spray lance cart.
Place the trigger gun into the holder.
Use the pushing handle to push the appliance.
When transporting in vehicles, secure the device according to the guidelines from rolling away, slipping and tipping over.
To reduce the space requirement, loosen the star grips and swivel the push handle backwards.

Storage

CAUTION
Risk of personal injury or damage! Consider the weight of the appliance when storing it.
This appliance must only be stored in interior rooms.

Frost protection

ATTENTION
Risk of damage! Freezing water in the appliance can destroy parts of the appliance.
In the winter, preferably store the device in a heated room
If storing it in unheated rooms, follow these instructions:

Drain water

Screw off water supply hose and high pressure hose.
Operate device for max. 1 minute until the pump and conduits are empty.
Unscrew the water filter and empty it.

Flush device with anti-freeze agent

Note: Observe handling instructions of the anti-freeze agent manufacturer.

Pump in conventional frost protection agents through the appliance.

A certain corrosion protection is achieved with this as well.

Care and maintenance

You can sign with your dealer a contract for regular safety inspection or even sign a maintenance contract. Please take advice on this matter.

Note: The maintenance plan given below only lists the maintenance tasks for the high-pressure pump. The maintenance tasks for the engine must also be done according to the details given in the operating instructions manual of the engine manufacturer.

DANGER
Risk of injury if the machine is left running in an unattended state.
Before working on the device, turn the starter to “0/OFF” and remove the spark plug connector.
Risk of burns! Do not touch hot mufflers, cylinders or radiator ribs.

Maintenance intervals

Daily

Check the high pressure hose for damages (risk of bursting). Please arrange for the immediate exchange of a damaged high-pressure hose.

Weekly

Check oil level.
Please contact Customer Service immediately if the oil is milky (water in oil).

Monthly

Clean water filter.
Clean filter at the detergent suck hose.
Check the fastening elements between the motor and frame for cracks; have cracked fastening elements replaced by Customer Service.

After 500 operating hours, at least annually

Have the maintenance of the device performed by the customer service.
Change the oil in the high pressure pump..

Maintenance Works

Clean water filter.

Shut off water supply.
Unscrew the covering nut.
Remove the filter cup towards the bottom.
Clean filter inlay and filter cup.
Check the O-rings for proper seating.
Insert the filter inlay into the filter cup.
Replace the filter cup.
Screw on and tighten the union nut.

Oil change in high pressure pump

Oil change:

Ready a catch bin for appr. 1 Liter oil.
Turn out the oil drain screw.
Drain the oil in a collection basin.
Dispose of old oil ecologically or turn it in at a collection point.
Screw in the oil drain screw.
Fill in new oil up to the middle of the oil sight glass.

Add oil slowly so that air bubbles can escape.
For oil type refer to technical specifications

Troubleshooting

DANGER
Risk of injury if the machine is left running in an unattended state.
Before working on the device, turn the starter to “0/OFF” and remove the spark plug connector.
Risk of burns! Do not touch hot mufflers, cylinders or radiator ribs.

Motor does not run

Follow operating instructions of the engine manufacturer!

Follow operating instructions of the engine manufacturer!

Operating speed of the engine is too low
Check operating speed of the engine (refer to technical data).
Low-pressure nozzle is installed.
Install the high pressure nozzle.
Nozzle is blocked/ washed out
Clean/ replace nozzle.
Water filter contaminated
Clean water filter.
Air within the system
Deaerate the appliance (see “Start-up”)
Amount of water supply is too low.
Check water supply level (refer to technical data).
Pipe inlets to pump are leaky or blocked
Check all inlet pipes to the pump.

Device leaks, water drips from the bottom of the device

Pump leaky
Note: 3 drops/minute are allowed.

With stronger leak, have device checked by customer service.

Detergent is not getting sucked in

High pressure nozzle is installed
- Install the low pressure nozzle.
Detergent suction hose with filter is leaky or blocked
- Check/ clean detergent suction hose with filter.
Backflow valve in the connection of the detergent suction hose is jammed
- lean/ replace backflow valve in the connection of the detergent suction hose.
Detergent dosing valve is closed or leaky/ blocked
- Open or check/clean detergent dosing valve.

If malfunction can not be fixed, the device must be checked by customer service.

Warranty

The warranty terms published by our competent sales company are applicable in each country. We will repair potential failures of your accessory within the warranty period free of charge, provided that such failure is caused by faulty material or defects in fabrication. In the event of a warranty claim please contact your dealer or the nearest authorized Customer Service center. Please submit the proof of purchase.

Accessories and Spare Parts

Only use original accessories and spare parts, they ensure the safe and trouble-free operation of the device.
For information about accessories and spare parts, please visit www.kaercher.com.

Accessories

ABS hose reel
2.637-002.0
Hose reel for high-pressure hose for fastening to the tubular frame.

ABS frame cage broad
2.637-007.0
Expansion of the tubular frame to protect the device and for crane loading.

EU Declaration of Conformity

HD 9/21 G

We hereby declare that the machine described below complies with the relevant basic safety and health requirements of the EU Directives, both in its basic design and construction as well as in the version put into circulation by us. This declaration shall cease to be valid if the machine is modified without our prior approval.

Product: High pressure cleaner
Type: 1.810-xxx
Relevant EU Directives
2006/42/EC (+2009/127/EC)
2000/14/EC
2014/30/EU
Applied harmonized standards
EN 60335–1
EN 60335–2–79
EN 55012: 2007 + A1: 2009
Applied conformity evaluation method
2000/14/EC: Appendix V
Sound power level dB(A)
HD 9/21 G
Measured: 104
Guaranteed: 106

The undersigned act on behalf and under the power of attorney of the company management

Sign

Authorised Documentation Representative S. Reiser

Alfred Kärcher GmbH Co. KG
Alfred-Kärcher-Str. 28 – 40
71364 Winnenden (Germany)
Phone: +49 7195 14-0
Fax: +49 7195 14-2212
Winnenden, 2015/12/01

HD 9/23 G

We hereby declare that the machine described below complies with the relevant basic safety and health requirements of the EU Directives, both in its basic design and construction as well as in the version put into circulation by us. This declaration shall cease to be valid if the machine is modified without our prior approval.

Product: High pressure cleaner
Type: 1.810-xxx
Relevant EU Directives
2006/42/EC (+2009/127/EC)
2000/14/EC
2014/30/EU
Applied harmonized standards
EN 60335–1
EN 60335–2–79
EN 55012: 2007 + A1: 2009
Applied conformity evaluation method
2000/14/EC: Appendix V
Sound power level dB(A)
HD 9/23 G
Measured: 105
Guaranteed: 107

The undersigned act on behalf and under the power of attorney of the company management.

Sign

Authorised Documentation Representative S. Reiser

Alfred Kärcher GmbH Co. KG
Alfred-Kärcher-Str. 28 – 40
71364 Winnenden (Germany)
Phone: +49 7195 14-0
Fax: +49 7195 14-2212
Winnenden, 2015/12/01