– 4 Screw the suction hose with filter (orderno. 4.440-238.0) to the water connec-tion. Deaerate the appliance:Unscrew the nozzle.Switch on the appliance and let it rununtil the water exiting is bubble-free.At the end let the appliance run for ap-prox. 10 seconds - then switch off. Re-peat the procedure for a couple oftimes. Switch off the appliance and fit the noz-zle again. DangerRisk of explosion!Do not spray flammable liquids.If the appliance is used in hazardous areas(e.g. filling stations) all of the safety provi-sions and operating instructions detailed inthis manual must be observed. WarningLong hours of using the appliance cancause circulation problems in the hands onaccount of vibrations.It is not possible to specify a generally validoperation time, since this depends on sev-eral factors:– Proneness to blood circulation deficien-cies (cold, numb fingers).– Low ambient temperature. Wear warmgloves to protect hands.– A firm grip impedes blood circulation.– Continuous operation is worse than anoperation interrupted by pauses.In case of regular, long-term operation ofthe device and in case of repeated occur-rence of the symptoms (e.g. cold, numb fin-gers) please consult a physician.CautionClean engines only at places with corre-sponding oil separators (environmentalsafety).NoteRisk of blocking. Place the nozzles in theaccessory compartment with their jointpointing upward.NoteThe appliance is equipped with a pressureswitch. The motor starts up only when thelever of the pistol is pulled. Set the appliance switch to "I". Unlock the hand-spray gun and pull thelever of the gun. Set working pressure and flow ratethrough turning (runless) at the pres-sure- and amount regulation (B) (+/-). Close the hand spray gun. Turn the casing of the nozzle till the de-sired symbol matches the marking. WarningUnsuitable detergents can cause damageto the appliance and to the object to becleaned. Use only those detergents thathave been approved by Kärcher. Observethe dosage and other instructions providedwith these detergents. For consideratetreatment of the environment use detergenteconomically.Follow the safety instructions for using de-tergents.Kärcher detergents ensure smooth func-tioning. Please consult us or ask for our cat-alogue or our detergent information sheets.Suck in water from vesselOperationHigh pressure operationSelect spray typeFlat low pressure spray(CHEM) for operating usingdetergents or cleaning at lowpressure.High pressure flat spray (25°)for large dirt areasOperation with detergent14 EN