Karcher B402 Pressure Washer (Swallowfield RG7)

I am reposting as I have been let down 3 times. Karcher pressure washer. It has started to leak and we have been given another one so if anyone would like to have a go at repairing it ... Please say why you want it, and when you could collect, to be considered .. thanks! Collection from Swallowfield.