Hi I'm Mat from eSpares, in this video I'll be showing you have to change electrical parts
in a Karcher pressure washer.
If you need to diagnose a problem with your pressure washer
you can see information about that in a separate eSpares YouTube video.
Safety first: Always unplug an appliance before carrying out any work.
And in order to carry out these fixes you first need to remove any hoses
or accessories that may be on the outside body of your pressure washer.
And you need to separate the two parts of the body by undoing the seven
Tork screws that hold it together.
Remove the detergent hose and here we have the motor and its cover.
So release the mains lead gromit from the case and lift out the motor and it's cover,
making sure that you don't lean it on the switch leaver here so put it that side.
Now we need to separate the two parts of the cover you may need a flathead screwdriver
to be able to remove these clips here that keep it in place.
You will find a little black clip that keeps the other side of the case on,
give that little press and that should release the bottom half of cover .
And here we can see the switch so easy enough to remove
give it a good a pinch to work its way out of the motor assembly now you need to replace the switch lever.
So turn it a hundred and eighty degrees and that should come out of the switch assembly.
Grab your new switch and you can see goes into place like so.
and then we can reattach the electrical connectors but make sure you put your switch leader in first.
So there we have one new switch fitted to this Karcher K2.
Another issue another electrical parts that may need changing very common
is the carbon brushes may need changing on the motor.
Simple enough to do they actually held in by this spring
so just move the spring to one side and then you can ease out the carbon brushes
and remove their electrical connectors just come off very simply
and again you might need to pinch you can then grabbed you a new carbon brush
making sure that this spring is out of place first.
The spring keeps it into position like so and then reconnect the electrical connectors
and when you've replaced all the carbon brushes on the k2 or the switch,
you can then place it in the motor case making sure that the switch fits into its section there
and also the capacitor next to it.
so push the capacitor right down into the compartment
and then make sure that these wires are in this groove here
so they're not pinched by the motor case, and also the mains cable here.
Do be careful when putting the two parts of the case together you don't pinch these wires here.
So there we have it a switch and carbon brushes changed on this K2.
So you can put the motor and its case back into the body
making sure that the mains gromit goes back in the right place.
You can then re screw together the two parts of the body
and remembering to reattach the detergent hose.
So there we have electrical parts changed on a K2 pressure washer.
For larger Karcher pressure washers you may have a problem with the capacitor and need to replace it.
So same deal with the K2 remove any hoses or accessories that may be on the outer body.
And then again remove the two halves of the outer body with a Tork's 10 screwdriver.
Once all the screws are removed turn the chassis over and lift off the yellow parts of the body
making sure that the mains lead is out of the way. and here we can see the motor and the pump assembly
so you can lift that up out of the chassis.
And place that on your surface like that, I'm just going to disconnect the detergent hose.
And here we can see the capacitor, the capacitor is actually only held in by
the housing here but it is also pinched by the motor the bottom and the pump at the top.
So you need to remove these four screws not entirely remove the two
nearest the capacitor first completely and then release these two at the back
as far as you can and then we can simply pull the capacitor out.
This is the last screw that I am undoing and what this is doing is creating a gap in the motor
that you can see there.
So you only need to undo this enough so you can pull the capacitor away from the lip
and simply pull it down.
When capacitors fail they can leak such as this one here
so you can see that this one has failed quite dramatically.
If this has happened to your capacitor you will definitely need to replace it.
When replacing the capacitor line up the connectors nice and straight and you should feel them fit
into the two slots in the housing, you can push it up another couple of mill
to secure it in place and push it over the lip then you can re secure the four bolts to keep it in place.
Now as I'm tightening the bolts here I'm compressing the spring within the assembly
so it might be a good idea to use a ratchet for some extra force.
As your tightening the bolts make sure that the gap in the motor housing has closed
and that the capacitor is in the correct position and also that this water seal
is covering the join between the capacitor and its housing.
You can replace the motor and pump assembly in the bottom of the case it's worth noting
the case has a mounting hole there which relates to that part of the motor and pump assembly.
So that needs to sit in a hole and whilst I do that I'll also reconnect the detergent hose.
Make sure the mains cable grommet is in the right position flat part the back.
Make sure the mains cables tucked under the capacitor then you can put
the two parts of the chassis together.
Hold the two parts together, flip it over you can then re screw it together,
So there we have it new electrical components fitted to Karcher pressure washers.
Remember spares and accessories for pressure washers and all other appliances
can be found on the eSpares website.
Thanks for watching.