McAlpine Sticking Start Mechanism / Capacitor Issue

Disposal runs but there is a noticeable delay of several seconds between switching on and the motor starting.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Failing start capacitor (if fitted), Sticking internal centrifugal switch, High friction in motor bearings, Low supply voltage

Safety first: Turn off power before opening any covers.

Check supply voltage (qualified only): Have a qualified electrician verify that the supply voltage at the McAlpine unit is within specification.
Inspect capacitor: If your model has an external capacitor, check for bulging or leakage and replace with an identical McAlpine-rated part.
Monitor progression: If the delay worsens over time, plan for motor replacement.

Hard 4/5

Start Capacitor / Motor Assembly

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