After reading this two thoughts:
1. Can you use a flexible metal type drain tool... I can picture what I mean and it might not be a drain rod but something flexible and stiff to push through the blockage to begin with. Might be thinking of a metal spring type rod.
2. Can the drain unblock attachment not be made to fit the 'Karcher-like' pressure washer... I had an Aldi pressure washer which looked like a Karcher one but when I bought a patio cleaner it didn't fit.... use of a file got it to fit fine.
Last edited by: rtj70 on Fri 28 Dec 12 at 22:55
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