Power washer - lost pressure
I have a Sears Craftsman power washer (580.752060 - 2500PSI max and 2.3 gpm max) I have used it with no problems for the past several years and I trotted it out this morning to wash my deck - it fired right up and ran fine for about a half hour - plenty of pressure - no problems, when it suddenly lost all pressure. I checked for blockages, but there do not appear to be any - the hose and wand are all clear with no obstructions. When the water supply is connected, and I depress the trigger a stream of water appears (as it always does when I do that to relieve the pressure) - when I fire up the engine (Honda) it runs fine, but I get no pressure and when I depress the trigger in the wand I get no stream of water at all.
Any suggestions on an approach (other than tossing it!) would be appreciated.