Kew hobby 80-1 pulsing

Usually a sign of a dodgy seal on the high pressure side, maybe but not necessarily around the trigger. Does it matter? Are there spares kits available? A seal that leaks under pressure will not necessarily be obvious as you strip it. Could be a scratch or score in one of the rigid parts. Are you used to stripping and rebuilding stuff like this? How much do you like a challenge?

I had a Karcher which developed a leak on the high-pressure side somewhere near the hose connection on the main unit, with water spraying out of the vents. I took it apart, but could find nothing wrong. After reassembly, using the same washers, it worked perfectly, and has continued to do so, although it is only used as a spare now.

You are right about the challenge, though. Karcher used three different sizes of screw (Torx headed) to hold the thing together, and six different sizes of "O" rings!

Sounds like the power washer version of hammer. Brian

Pulsing when gun closed. Leak on high pressure side or unlosder valve needs adjusting. Pulsing when gun open. Blocked nozzle jet.

replying to newshound, Vincent Cassidy wrote: I have the same model Hobby 80-1 which surges on high pressure ok on low setting on lance, there are no leaks frim machine did you get yours sorted if so how did you fix it.