MA 12 On/Off Commutator Master (mechanical part)
Applicable for:
- AVA Master: P60, P70, P80, both Master 1.0 & Master 2.0
This is the mechanical component of the main power switch on your AVA Master – the part you turn by hand to start or stop the machine. It includes the rotating knob and the inner axle that connects to the switch housing (electrical unit).
This part is purely mechanical and does not include any electronics.
Note: This part is rarely damaged during normal use. Replacement is typically only required due to impact or external force.
*Recommended for skilled users or technicians
If the knob is loose, cracked, or no longer engages the internal switch, this part allows for quick and cost-effective repair. Always inspect the switch housing for internal damage before replacing only the mechanical component. If in doubt, consider replacing complete AVA Warranty and Repair Kits which contains switch module with electronics.
See overview of all kits here.
Typical cause of failure
• External impact or force applied to the switch.
• Over-tightening or twisting while frozen.
• Drop damage during transport or handling.
Failure symptoms – Part correlation
• The knob turns without resistance and doesn’t start or stop the machine.
• Knob is visibly cracked, misaligned, or broken off
• Loss of connection between the knob and internal switch mechanism.
Installation advice
Always priority safety first: Safety instructions – AVA of Norway
- Make sure you have considered the alternative above.*
- Disconnect power and follow proper safety procedures before starting.
-
Remove the switch housing cover and replace the axle mechanism.
-
Ensure the new knob aligns correctly with the switch box and rotates smoothly.
- Follow Master guide instructions to step 15 carefully for correct installation and alignment.
- Replace switch axle at step 15.
- Install knob as described at step 25.
Tools Needed for all AVA Pressure Washer Maintenance – AVA of Norway
Warranty and Self-Repair – The AVA Way
At AVA, we encourage repair – not throwaway culture. You’re free to open your machine, inspect it, and replace parts yourself without losing your warranty. That’s part of what makes owning an AVA product different.
We offer guides, spare parts and support so that you can keep your machine running for many years to come – whether it’s a simple nozzle, a carbon brush, or a full pump module.
Many parts are designed to be replaceable – just like they should be.
Visible signs of use or repair are welcomed – they mean the product is being cared for.
Learn more about our warranty: AVA Warranty Terms & Conditions
Price includes VAT
MA 12 On/Off Commutator Master (mechanical part)
Applicable for:
- AVA Master: P60, P70, P80, both Master 1.0 & Master 2.0
This is the mechanical component of the main power switch on your AVA Master – the part you turn by hand to start or stop the machine. It includes the rotating knob and the inner axle that connects to the switch housing (electrical unit).
This part is purely mechanical and does not include any electronics.
Note: This part is rarely damaged during normal use. Replacement is typically only required due to impact or external force.
*Recommended for skilled users or technicians
If the knob is loose, cracked, or no longer engages the internal switch, this part allows for quick and cost-effective repair. Always inspect the switch housing for internal damage before replacing only the mechanical component. If in doubt, consider replacing complete AVA Warranty and Repair Kits which contains switch module with electronics.
See overview of all kits here.
Typical cause of failure
• External impact or force applied to the switch.
• Over-tightening or twisting while frozen.
• Drop damage during transport or handling.
Failure symptoms – Part correlation
• The knob turns without resistance and doesn’t start or stop the machine.
• Knob is visibly cracked, misaligned, or broken off
• Loss of connection between the knob and internal switch mechanism.
Installation advice
Always priority safety first: Safety instructions – AVA of Norway
- Make sure you have considered the alternative above.*
- Disconnect power and follow proper safety procedures before starting.
-
Remove the switch housing cover and replace the axle mechanism.
-
Ensure the new knob aligns correctly with the switch box and rotates smoothly.
- Follow Master guide instructions to step 15 carefully for correct installation and alignment.
- Replace switch axle at step 15.
- Install knob as described at step 25.
Tools Needed for all AVA Pressure Washer Maintenance – AVA of Norway
Warranty and Self-Repair – The AVA Way
At AVA, we encourage repair – not throwaway culture. You’re free to open your machine, inspect it, and replace parts yourself without losing your warranty. That’s part of what makes owning an AVA product different.
We offer guides, spare parts and support so that you can keep your machine running for many years to come – whether it’s a simple nozzle, a carbon brush, or a full pump module.
Many parts are designed to be replaceable – just like they should be.
Visible signs of use or repair are welcomed – they mean the product is being cared for.
Learn more about our warranty: AVA Warranty Terms & Conditions
