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In this video I show you the experience I had when trying to use the Karcher gutter cleaning part of the PC20 Pipe and gutter cleaning kit.
My overall impression is that it might work if the roof/gutter system was designed with the PC20 in mind ie. the gutter was lowered by a few centimetres. But, it took me some considerable amount of time to setup the Karcher:-
(1) un-plumb the Karcher K4 from the garage
(2) plumb-in the Karcher K4 at the rear of the house
(3) Fetching an electrical extension and unreeling it entirely as per instructions
(4) Trying to get the "grip thing" to work - but it didn't grip my semi-circular profiled gutter that well.
Because it failed to fit my gutter, I had to resort to using a garden hose as normal which did the job in about 5 minutes with one re-positioning of the ladder on a 7.5 metre long gutter.
I think the gutter cleaning bit of the kit is useless for my situation and therefore I've ended up spending about £60 for a 20m high pressure hose and "pipe-cleaning" nozzle which I needed to help clear my sewer pipes.