I bought one of these washers last year used it about 5 times took it out to use it this year after storeing it in a dry warm place over the winter and on the second time of use it started to give problems, left it to a karacher agent and because it was just over a year old it cost me £60 pounds to fix by putting in a new pump ,when asked they could give me no reason why it broke. When I phoned karcher they told me they recomend not to use it for more than 1 hour but it dosent say anything in the manual about that, just wanted to let people know so it dosent happen to them hope after the next 5 or 6 uses it dosent happen again or it could be another £60 or even more. More angry with karcher than anything.