Problem with Karcher Jet Washer 620m?

the unloader is sticking, this piston has jammed againsted the mirco switch,
you need to strip it down so you can get at the pump,
undo the 2 screws that hold black plastic microswitch housing on,
slide the ring off from the electric box (from the orings) and lift off,
somtimes you can just push the exposed piston down with the flat of a screwdriver to free it,
otherwise take the top of the pump off pull out and grease, then replace,
need parts?
http://www.aquaspray.co.uk

Malcolm
January 2010