Stand Mixer: Isn't spinning

A failed worm wear or damaged planetary gear assembly can prevent the beater from spinning. If the beater doesn't move at all when the motor spins, then the worm gear is likely stripped. Unplug the mixer, examine the worm gear and replace the gear if it's stripped.

If the beater moves around the inside of the mixing bowl but the beater itself doesn't spin, then the pinion gear inside the planetary gear assembly is likely stripped or damaged. Unplug the mixer, pull off the planetary gear assembly and replace the assembly if the pinion gear is damaged or stripped.

stand mixer

These repairs may help solve your stand mixer problem

Replace the stand mixer worm gear

Replace the stand mixer worm gear

The worm gear driven by the vertical shaft and pinion gear rotates the attachment. If the attachment will not rotate, replace the worm gear.

September 20, 2015
By Lyle Weischwill
How to replace a stand mixer worm gear

If a stand mixer attachment won't spin, the worm gear teeth could be worn or damaged. This DIY repair guide and video show how to replace a stand mixer worm gear in 30 minutes or less.

Repair difficulty
Time required
 30 minutes or less
Read more
Replace the stand mixer planetary gear assembly

Replace the stand mixer planetary gear assembly

The planetary gear spins the beater as the planetary housing moves the beater in a circular motion to orbit the inside of the mixing bowl. If the beater moves in a circular orbit around the inside of the bowl but the beater doesn't spin then the beater gear inside the planetary housing is likely stripped or damaged. Replace the planetary gear assembly if the beater doesn't spin when orbiting the inside of the mixing bowl.

Symptoms common to all stand mixers

Choose a symptom to see related stand mixer repairs.

Main causes: bad wiring connections, faulty speed control plate, electronic control board failure
Main cause: attachment clearance setting needs adjustment
Main cause: worn carbon motor brushes
Main causes: phase control board failure, wiring connection problem, faulty electronic control board
Main causes: lack of electrical power, wiring failure, worn carbon motor brushes, bad drive motor, tripped overload switch, control problems
Main causes: bad worm gear, damaged planetary gear assembly
Main causes: bad lubricating grease, mixer sitting idle for weeks at a time, mixer running constantly for more than 30 minutes

Repair guides common to all stand mixers

These step-by-step repair guides will help you safely fix what’s broken on your stand mixer.

September 20, 2015
By Lyle Weischwill
How to replace a stand mixer phase control board

The phase control board works with the governor and control plate to control motor speed. Replace the phase control board if defective.

Repair difficulty
Time required
 30 minutes or less
September 20, 2015
By Lyle Weischwill
How to replace a stand mixer worm gear

Here’s how to replace the worm gear in your stand mixer if it’s worn or damaged.

Repair difficulty
Time required
 30 minutes or less
September 1, 2015
By Lyle Weischwill
How to replace stand mixer motor brushes

If the carbon brushes are worn and damaged, replace them using these steps.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all stand mixers

Use the advice and tips in these articles and videos to get the most out of your stand mixer.

December 16, 2015

Using a wiring schematic to trace a current video

By Sears PartsDirect staff

Find out what’s wrong with your appliance by following a circuit.

December 9, 2015

How to read a wiring schematic video

By Sears PartsDirect staff

Learn how to decipher symbols so you can buy the right part for your problem.

December 2, 2015

Wiring schematic symbols explained video

By Sears PartsDirect staff

Learn some of the most common symbols found in a wiring diagram and what they mean.