Kew hobby 80-1 pulsing

[William]

Hiya guy's I'm looking for a little help my power washer I was using it and
turned it off for 5 mins and when I turned it on its started pulsing on full
pressure but fine on low cany any one give me any advice on this please

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for full context, visit https://www.homeownershub.com/uk-diy/kew-hobby-80-1-pulsing-1362612-.htm

[newshound]

Post by William
Hiya guy's I'm looking for a little help my power washer I was using it and
turned it off for 5 mins and when I turned it on its started pulsing on full
pressure but fine on low cany any one give me any advice on this please

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?

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[Jeff Layman]

Post by newshound

Post by William
Hiya guy's I'm looking for a little help my power washer I was using it and
turned it off for 5 mins and when I turned it on its started pulsing on full
pressure but fine on low cany any one give me any advice on this please

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!

[Brian Gaff]

Sounds like the power washer version of hammer.
Brian
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Post by William
Hiya guy's I'm looking for a little help my power washer I was using it and
turned it off for 5 mins and when I turned it on its started pulsing on full
pressure but fine on low cany any one give me any advice on this please
--
for full context, visit
https://www.homeownershub.com/uk-diy/kew-hobby-80-1-pulsing-1362612-.htm

[TMH]

Post by William
Hiya guy's I'm looking for a little help my power washer I was using it and
turned it off for 5 mins and when I turned it on its started pulsing on full
pressure but fine on low cany any one give me any advice on this please

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