Basic Settings And Service Procedures; Cleaning The Water Filter; Oil Change; Removal Of The Crankshaft Pump - Kärcher HD 20/15-4 Service Manual

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Basic settings and service procedures

Service work on the appliance may only be per-
formed by the authorized customer service. If so in-
structed in the operating instructions, the special
tools indicated by KÄRCHER must be used.
Danger
Danger from electric current and liquids. While work-
ing on the appliance, pull the mains plug out of the
socket and shut off the water supply

5.1 Cleaning the water filter


Turn the filter cup screws and pull it downwards
along with the cup.
The individual parts of the water filter

Check the water filter for contamination, clean if
required.

Assemble it back in the reverse sequence.

5.2 Oil change


Unscrew the oil drain screw and collect used oil.

Replace washers of the oil drain screw.

Screw in the oil drain screws and tighten them.

Slowly fill in new oil until the "MAX" marking on the
oil sight glass.

5.3 Removal of the crankshaft pump

Drain the oil in a collection basin.

Pull the support bow from the pressure switch.

Remove the pressure switch.

Check the diaphragm, replace if required.

Unscrew the filter cup.

Loosen the screw connection at the motor flange.

Remove the high pressure pump casing; use a flat
screwdriver for this.
English 5.906-494.0 Rev. 01 (04/11)
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