For the 3rd time, I need to relace my trigger # 4.7752640. It does not come with any instructions or diagrams. Can anyone give me some tips please. There are NO certified dealears in central Ohio and those dealers that use to handle Karcher have dropped the line. I sent an e-mail to Karcher but did not get a response. One dealer told me that's why they stop dealing with them....unresponsive. Thank you, Mike Palma mpalma@columbus.rr.