I need to find a service centre to service my Karcher K3.690 PSI-1800 GPM 1.5 1.602-772.0 pressure washer. I was using it and suddenly I had no pressure but there was water coming from the bottom of the machine. My husband figures a seal may have blown but I do not have the proper tools to open it up to see or a manual to trouble shoot the machine to see if in fact thats what it is. Please help!!!