4 English 5.906-565.0 Rev. 00 (12/12)Good service work requires extensive and practice-oriented training as well as well-structured trainingmaterials.Hence we offer regular basic and advanced trainingprogrammes covering the entire product range for allservice engineers.In addition to this, we also prepare service manualsfor important appliances - these can be initially usedas instruction guides and later on as referenceguides.Apart from this, we also regular information aboutproduct enhancements and their servicing.If you should require supplements, have correctionsor questions regarding this document, please ad-dress these citing the following subject to:international-service@de.kaercher.comThe responsible product specialist will take care ofyour issue.Copying and duplication of texts and diagrams aswell as third-party access to this information ispermitted only with the explicit permission of thecompany:Alfred Kärcher GmbH & Co. KGP O Box 160D -71349 Winnendenwww.kaercher.comService and maintenance tasks may only be per-formed by qualified and specially trained specialists. DangerImmediate danger that can cause severe injury oreven death. WarningPossible hazardous situation that could lead to se-vere injury or even death.CautionPossible hazardous situation that could lead to mildinjury to persons or damage to property.Noteindicates useful tips and important information. DangerRisk of electric shock.Prior to opening the electric casing, the appliancemust be de-energised (pull the mains plug) and se-cured against accidental restart.Notes about the ingredients (REACH)You will find current information about the ingredientsat:www.kaercher.com/REACHMobile cold water high-pressure cleaner in differentperformance categories for commercial use.– Water inlet with water filter– Hot water inlet up to 60 °C max– Power switch– Pressure switch– 4-pole, air-cooled electric motor– 3-piston crankshaft pump, piston with ceramicsleeves– Pump head made of brass– Suction and high-pressure valves made of stain-less steel– Overflow valve with pressure and quantity regula-tion– Trigger gun– Spray lance– Power nozzle (stainless steel)– High pressure hose– Rotary couplingThis service manual describes the following applianc-es:HD 6/15-4HD 7/11-42 PrefaceSubject: Fall 1145443 Safety instructions3.1 Hazard levels3.2 General notes on safety4 Environmental protectionThe packaging material can be recycled.Please do not place the packaging into theordinary refuse for disposal, but arrange forthe proper recycling.Old appliances contain valuable materialsthat can be recycled. Please arrange forthe proper recycling of old appliances. Bat-teries, oil, and similar substances must notenter the environment. Please dispose ofyour old appliances using appropriate col-lection systems.5 Technical Features5.1 General5.2 Electrical/electronics5.3 Drive5.4 High-pressure pump5.5 Accessories5.6 Field of application