Clint, you don't say if its electrical power you lose?
If it is, get an electrician to check it out. You could be shorting out the machine with a water leak?
The other option is the valve that triggers the power is jammed with debris/damaged and not responding.
See a website like espares.co.uk to find an exploded view of your machine and go from there.
If you are not sure what you are doing, get help. Karcher parts are readily available but keep a calm head on the prices, it may be better to get a new machine?
t.r.services
July 2009
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While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix general d.i.y.