My karcher K397 seems to have not as much pressure as it used to. Its only just over a year old and out of guarantee. Anybody with any helpul tips or who know anybody in Scotland who can repair it. I would be very grateful for any help.
They are Karcher specialists and should sort you out easily.
PS they are Scottish.
website is under construction but they have a contact number - ask for Hugh Gamlen (The Proprietor). He is really helpful.
I had the same problem ... look for a black plastic cover with a silver snap on top; pry off the silver snap and lift off the plastic cover; next remove the two screws on the top plate then pull out the piston inside - if unable to lift out, start unit and watch it pop out - coat piston with lithium grease and reinstall - it will work great!
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