This step-by-step guide shows how to replace the internal hose on your AVA Master P60-P80, both Master 1.0 and Master 2.0.
This process consists of several detailed steps and may take some time to complete. Each step is thoroughly explained to make the procedure as straightforward as possible — and to help you achieve the best possible result. We strongly recommend reading through all steps in advance, so you fully understand the process, have the necessary tools ready, and have set aside enough time to complete the task without interruptions.
Always unplug the pressure washer from both the mains power and the water inlet before starting the service.
Click here to read more about safety.
Even though power and water are disconnected there may be pressurized water in the hose. Discharge this pressure by pulling the trigger on the gun in a safe direction.
Make sure your work area is clean and suitable for this type of work. There will usually be a small amount of water inside the pump and hose.
00. Parts and tools
An overview of what is needed to do this service.
01. Remove the hose from the hose reel
Remove the hose from the hose reel.
Push in the 2 hooks while pulling the reel handle to release the handle.
02. Remove the handle from the reel
Pull the handle out to remove.
Move the hose on the reel slightly downwards to expose one of the Torx screws.
03. Remove screws from the hose reel
Remove the 5 screws on the hose reel.
04. Disassemble the hose reel
Remove the right side of the hose reel frame.
Remove the hose guide.
05. Remove the U-pin from the swivel
Pull the hose reel to the right to access the hose reel swivel.
Remove the U-pin securing the hose to the swivel.
06. Remove the hose from the swivel
Pull the hose out of the swivel.
07. Remove the rest of the hose reel assembly
Remove the left reel holder and the hose reel.
08. Remove the water filter
Unscrew the water filter.
09. Remove screws from the back cabinet
Unscrew the 6 T25 screws from the back cabinet. (Picture 1)
Note: Machines produced in 2024 or later have 3 extra screws in addition to picture 1. (Picture 2)
Picture 1:
Picture 2 (Master produced in 2024 or later):
10. Remove the front cover
Push the front brace release button and pull the front cover off.
11. Remove screws from the motor/pump
Unscrew the 4 T25 screws securing the motor/pump.
12. Release cable strain relief
Release the cable strain release from the back cabinet.
Carefully lift the motor/pump so that it is on an angle.
13. Release the internal hose
Carefully use a flat screwdriver or a small knife to release the U-pin securing the internal hose to the pump outlet.
Pull the hose from the pump head.
14. Lift the motor/pump
Carefully lift out the motor/pump out of the rear cabinet.
15. Remove the old hose
Before pulling out the hose take a marker pen and make a line where the hose goes into the hose reel tube. Normally the easiest way to extract the old hose is by pulling it in the direction of the arrow. Keep feeding the hose through the hose reel pipe as you pull.
Line up the new and old hose. Transfer the marking you did on the old hose to the new hose.
16. Fit the new hose
Fitting the new hose is usually easiest by feeding it through the hose reel pipe from the top. Stop when you have 5-8cm distance between the bottom of the cabinet and the hose connector. Check the marking you did against the hose reel pipe and adjust if necessary.
17. Move 90° bend to new hose
Pry loose the U-pin and remove the 90° bend from the old hose and fit it on the new hose. Secure the bend by using the same U-pin you removed.
18. Reattach the internal hose
Carefully lower the motor/pump back into the pressure washer cabinet. With the motor/pump at an angle, reattach the internal high-pressure hose to the pump head.
Secure the hose using the U-pin. Some force may be required to properly secure the U-pin to the pump head.
19. Align the internal pressure hose
Make sure that the internal high-pressure hose runs through these two depressions in the back cabinet (red arrows). If you are unable to fit the motor/pump properly then lift it up and check that the internal hose is routed as indicated in this picture.
20. Align the motor/pump
If the previous step was successful the motor/pump unit should now fit correctly in the back cabinet.
Reattach the power cable strain relief into the slot in back cabinet.
21. Secure the motor/pump
Secure the motor/pump unit using 4 T25 screws. Two screws on top of the motor cowling and two screws on the pump head cover.
22. Attach the front cover
Put the front cover back onto the pressure washer. A bit of work may be needed to get it to align perfectly with the back cabinet, take your time. Push the front brace release button to allow for a correct alignment of the brace. When you are happy with your alignment, raise the pressure washer to the upright position.
23. Fasten the front cover
Secure the front cover with 6 T25 screws from the backside of the pressure washer. (Picture 1)
Remember the 3 extra screws in addition if you have Master produced in 2024 or later. (Picture 2)
Picture 1:
Picture 2 (for Master produced in 2024 or later):
24. Reattach the water filter
Ensure that the filter cassette is clean and undamaged. (The cassette can be removed for cleaning)
Reattach the water filter to the water inlet.
25. Fit the internal hose
Fit the hose to the left side hose reel holder as indicated in the pictures.
The end of the hose should reach approximately to the centre of the reel holder.
26. Connect the hose to the swivel
Connect the hose to the swivel in the hose reel.
Secure the hose with a U-pin.
27. Assemble the hose reel
Attach the hose guide to the left reel holder.
Put the two reel holders together over the reel tube.
28. Securing the hose reel
Secure the left and right reel holder with 5 T25 screws.
29. Attach the handle
Reattach the handle. It should click into place.
Check that the hose reel can rotate freely. Rewind the hose.
30. First start after change of hose.
It is now time to do the first start after the hose replacement.
- Start by connecting the pressure gun to the hose.
- Connect water.Make sure no water is leaking from the inside or anywhere else on the pressure washer.
- Pull the trigger and let the water flow until there is no more air coming out.
- Connect the power cord.
- Turn on the pressure washer.
- Pull the trigger and let water run for a minute before connecting a nozzle.
- Connect the nozzle.
- Use the pressure washer and make sure it is operating as normal.
Troubleshooting
Water is leaking from the inside
- Disconnect the power and open the pressure washer to locate the leak.
- Take necessary action to remedy any leaks.
The pressure washer won't turn on
- Check that the power cable is connected.
- Check that the circuit breaker has not been tripped.
- Check that the fuse in the power plug is intact (UK models only).
- Open the machine and check that all the internal cabling is connected.
Poor performance/pressure
- Improper assembly or dirt/debris in the pump.
- Check that the pump and especially the main valve for foreign objects/debris.
- Make sure that the spring in the main valve is correctly seated and working as intended.
Motor is making a humming noise and is not able to start
- Check that the capacitor is connected to the motor.
- It should be connected with one white and one black cable.
