Stand Mixer: Motor sparking

Worn carbon motor brushes typically cause motor sparking when you're running the mixer.

Unplug the stand mixer and examine the motor brushes for wear. To remove a motor brush, use a screwdriver to unscrew the motor brush cap. Pull the cap and the carbon brush out. Measure the length of the carbon motor brush to determine its level of wear. Replace the carbon motor brushes if either brush is shorter than 5/16-inch because a carbon brush can cause sparks when it wears down below that length. Replace both carbon brushes at the same time to keep the motor running smoothly and efficiently.

stand mixer

These repairs may help solve your stand mixer problem

Replace the stand mixer carbon motor brushes

Replace the stand mixer carbon motor brushes

The carbon motor brushes transfer electrical current to the motor armature. If the lengths of the brushes are worn below 5/16-inch, replace both carbon brushes.

September 1, 2015
By Lyle Weischwill
How to replace stand mixer motor brushes

If your stand mixer motor sparks when it runs, the motor brushes are probably worn. This DIY repair guide and video show how to replace a stand mixer motor brush in 4 quick steps.

Repair difficulty
Time required
 15 minutes or less
Read more

Symptoms common to all stand mixers

Choose a symptom to see related stand mixer repairs.

Main causes: lack of electrical power, wiring failure, worn carbon motor brushes, bad drive motor, tripped overload switch, control problems
Main cause: worn carbon motor brushes
Main cause: attachment clearance setting needs adjustment
Main causes: phase control board failure, wiring connection problem, faulty electronic control board
Main causes: bad wiring connections, faulty speed control plate, electronic control board failure
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 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 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 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.

January 18, 2016

How to use a multimeter to test electrical parts video

By Sears PartsDirect staff

Learn how to use a multimeter to check for wiring problems in an appliance that's not working

December 1, 2015

5 secrets for getting great stand mixer results

By Sears PartsDirect staff

Find out five tips and techniques to help get the most out of your stand mixer.

September 1, 2015

Stand mixer common questions

By Sears PartsDirect staff

These common questions and answers can help you make the most of your stand mixer.