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I have a Karcher KB3030B pressure washer and wanted to know if a T400 patio cleaner is compatible with this model.?

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6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 174 Answers

SOURCE: I have been using a KB3030B electric pressure

The pump has a section with pistons that must have oil. The oil/piston housing is between the motor and the water portion of the pump. Some seals, somewhere are leaking. If you run it without oil it will destroy itself. You must get it fixed and I would do so before using it again.

Posted on Jun 11, 2009

SOURCE: I have tried to use my Karcher washer model 411A

you have to lower the pressure at the lance for the detergent to be drawn into the hose. It works on a venturi principle.
on the lance you will have to twist or pull back the end for it to go into low pressure mode.

the easiest way to check it is working is to take out the lance extension , the bit that fits into the trigger on a bayonet fitting. run the machine and see if it then draws in detergent.

If it doesnt draw detergent then look to see if there is a detergent valve fitted to the filter that goes into the bottle and check that it is fully open. sometimes ther is a non return valve fitted into the filter too.
it could be that this non return valve has stuck. A poke with a bit of stiff wire should free it off its seat if it is that problem.

hope this helps a little

Posted on Jul 18, 2009

  • 1 Answer

SOURCE: Unloader Valve - Karcher Pressure Washer

where is the unloader valve locaed on a Briggs Stratton pressure washer?

Posted on Oct 03, 2009

  • 569 Answers

SOURCE: Pressure hose not working on Karcher pressure washer

A common problem with these is a pressure valve inside the unit that controls the power to the pump. If the unit has not been used for some time the valve can stick.

Does the motor run when you press the trigger?

Please respond and I will advise further. (add a comment)

Posted on Apr 06, 2010

  • 6468 Answers

SOURCE: pressure washer patio cleaner wont spin

you need to make sure the nozzles are not plugged up

Posted on Aug 21, 2012

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Mar 23, 2010 | Karcher Garden

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I have tried to use my Karcher washer model 411A using the suction tube which is immersed into Patio cleaner bottle but it does not work what am I doing wrong


you have to lower the pressure at the lance for the detergent to be drawn into the hose. It works on a venturi principle.
on the lance you will have to twist or pull back the end for it to go into low pressure mode.

the easiest way to check it is working is to take out the lance extension , the bit that fits into the trigger on a bayonet fitting. run the machine and see if it then draws in detergent.

If it doesnt draw detergent then look to see if there is a detergent valve fitted to the filter that goes into the bottle and check that it is fully open. sometimes ther is a non return valve fitted into the filter too.
it could be that this non return valve has stuck. A poke with a bit of stiff wire should free it off its seat if it is that problem.

hope this helps a little

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1 Answer

I have been using a KB3030B electric pressure washer to clean patio and have notice oil leaking from bottom of casing. Don,t know where its coming from nor what to do


The pump has a section with pistons that must have oil. The oil/piston housing is between the motor and the water portion of the pump. Some seals, somewhere are leaking. If you run it without oil it will destroy itself. You must get it fixed and I would do so before using it again.

Jun 10, 2009 | Karcher K2.26 Electric Power Washer

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