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What is a capacitor?

A capacitor is used as a form of starting aid for single-phase motors. It is a standardized component that is quite similar across all electric motors, including lawn mowers, miter saws, pressure washers, and similar devices. The size of the capacitor should be tailored to the size of the electric motor.


If a capacitor is damaged, you may experience issues with starting the motor.


It is a two-pole electrical component, somewhat similar to a battery. It can store energy to be used later.



The reason for damage:


Usually, the reason for failure is due to low voltage being supplied to the motor. Click here if you want to see how to replace it on a Master, and here for a V6.


Be aware that in some garages, boathouses, and similar places, there may be thin cables/poor power supply which can cause voltage drops and heavy loads on the capacitor.



How to know if a capacitor is damaged:


If a capacitor is not functioning, the machine will make a humming sound when you try to start the washer. It will then be impossible to get the motor running, and the humming sound is fairly consistent each time you try to start. If the humming occurs intermittently when the machine is in standby but still starts fine, the capacitor is likely not the issue. In such cases, the problem might lie in the pump. For more information, please read here [LINK].