Question about Karcher 2500 PSI Pressure Washer
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
This problem, where the unit continually switches on and off when the handgun is closed, is quite common. Unfortunately it has at least six different possible causes, only two of which are easily checked.
The first thing you can do is look for leaks. Even the slightest leak will cause this pulsing because the unit gets up to pressure, switches off, loses pressure, switches back on again, comes back up to pressure, switches off... and so on. This repeated switching is not good for the motor and should not be allowed to continue for longer than necessary to observe what's happening.
So... 1. Does the handgun shut off completely, or does it drip? If it drips, it may simply be because a seal has failed. The handgun can be dismantled, checked, and any defective parts replaced; be sure to lubricate O-rings with silicone grease when reassembling. As a last resort, the whole gun may need to be replaced.
2. Are there any visible leaks at the high-pressure hose screw connections? If so, most likely an O-ring needs replacing - again lubricate the new one well with silicone grease.
3. If there are no visible leaks, either from the gun or from the connections, all other possible causes are internal within the cylinder head or control head of the pump. New parts will be needed and this normally calls for a professional repair, although it's not beyond the scope of a truly competent amateur.
I hope this helps. Any further questions, just ask! Please remember to rate this response.
Posted on Apr 17, 2009
Tips for a great answer:
Oct 08, 2015 | Karcher K 367 M 1750 PSI 15 GPM Electric...
Apr 16, 2014 | Karcher 1750 Psi Elec Pressure Washer
May 22, 2011 | Karcher FactoryReconditioned K398MR 1750...
May 18, 2010 | Karcher 1750 Psi Elec Pressure Washer
May 14, 2010 | Karcher 1750 psi Electric Pressure Washer
Apr 01, 2010 | Karcher 1750 psi Electric Pressure Washer
Dec 31, 2009 | Karcher 1750 psi Electric Pressure Washer
Jul 06, 2009 | Karcher 1750 psi Electric Pressure Washer
Jun 19, 2008 | Karcher 2500 PSI Pressure Washer
197 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: