Convert 22mm outlet pressure washer to Karcher Quick Connect

Having a few pressure washers, and a surplus to requirements Karcher extension hose, I thought I would do a quick guide on converting a non Karcher washer to use Karcher hoses and lances via the newer Quick Connect system.

Here's our starting point:

One old (Very old!) Challenge Pressure Washer:

Thse are the connectors on the Karcher extension hose we will be recycling for this project:

The important part for any conversion is the quick release collar at the top of the frame, that can be unscrewed from the adaptor to reveal a M22 female thread that will screw directly to most domestic pressure washers, Karcher or other wise.

Here is the quick release collar, from the now dismantled hose. These can be purchased on there own as you see here, or as part of a Karcher kit that includes a 7.5m hose and a Karcher gun.

As mine was being reclaimed, and as you can see has some battle scars I changed out the 10mm o-ring shown in the picture.

Now we need to find a home for this on our washer, here is our trusty challenge once more:

Unscrew the existing hose from the washer to be left with a nice M22 threaded outlet:

The next stage is to clean up the treads on the outlet and screw the Karcher quick connect on: 

Job done, one Challenge washer converted to use a Karcher quick connect hose and gun.

This should work with most pressure washers with a 22mm Male outlet including:

-Challenge
-Dirt Devil
-RAC
-Bosch Aquatec
-Silverline
-Older Karchers with a 22mm outlet

For Nilfisk washers you would need to add in a 1/2 inch Female to 22mm male adaptor between the washer and the Karcher adaptor above.