Stand Mixer Not Spinning? Common Causes & Easy Fixes

A stand mixer that suddenly stops spinning can be a frustrating roadblock in the middle of your baking session. But before you consider an expensive repair or replacement, there are a few troubleshooting steps you can take to identify and fix the issue.

Let’s examine the common reasons your mixer might not be spinning and how you can get it back to working condition.

Common Causes of a Stand Mixer That Won’t Spin

Several internal components work together to keep your stand mixer running smoothly. If the beater isn’t spinning, the problem may be due to a worn-out worm gear or a damaged planetary gear assembly.

1. Worn-Out Worm Gear

The worm gear is a small but essential component that connects the motor to the beater, allowing it to rotate. Over time, the teeth on this gear can wear out or become stripped, preventing power from transferring to the beater.

Signs of a worn-out worm gear:

• The mixer motor runs, but the beater doesn’t move at all.
• You hear a grinding noise when the mixer is turned on.

If these symptoms sound familiar, your worm gear may need to be replaced.

2. Faulty Planetary Gear Assembly

The planetary gear assembly transmits power from the motor to the beater. Inside this assembly, the pinion gear meshes with the ring gear to create the spinning motion.

Signs of a faulty planetary gear assembly:

• The beater moves around the bowl but doesn’t actually spin.
• You hear clicking or grinding sounds while the mixer is running.

If the pinion gear is stripped or damaged, it won’t engage with the ring gear, causing the beater to stop spinning.

Read More: Stand Mixer Repair: Common Malfunctions and Fixes

Safety Tips Before You Start

Before attempting any repairs, prioritize safety to avoid injury or further damage to your appliance.

• Unplug the mixer: Always disconnect it from power before inspecting or repairing it.
• Wear insulated gloves: Protect your hands from sharp parts and potential pinching hazards.
• Avoid live voltage testing: If you’re not familiar with using a multimeter safely, don’t attempt to test electrical connections.
• Use proper tools: Avoid using excessive force when handling delicate parts.
• Work in a well-lit area: Proper lighting helps you see small components and avoid mistakes.
• Check your user manual: Some mixers have specific safety or repair instructions you should follow.
• Keep kids and pets away: Keep your workspace clear to prevent accidents.

How to Troubleshoot a Stand Mixer That Won’t Spin

Follow these detailed steps to troubleshoot and resolve issues with a stand mixer that won’t spin.

Step 1: Check the Worm Gear

1. Unplug the stand mixer from the power source.
2. Locate the worm gear, which is typically near the motor assembly beneath the mixer’s head.

3. Inspect the worm gear for signs of wear, stripping, or damage.
4. If the worm gear is stripped or broken, remove the retaining clip or screw securing it in place using a screwdriver or pliers.
5. Remove the damaged worm gear.

6. Place the new worm gear in the same location as the old one.
7. Secure the new worm gear with the retaining clip or screw.
8. Align the new gear properly so it engages with the motor assembly.
9. Reassemble any removed parts.
10. Plug in the stand mixer and test to see if the beater spins correctly.

Step 2: Check the Planetary Gear Assembly

1. Locate the planetary gear assembly, which is typically near the beater attachment.
2. Remove any attachments, such as the beater or dough hook, from the mixer.
3. Depending on your mixer model, remove a retaining clip or unscrew a cover to access the planetary gear assembly.
4. Carefully detach the planetary gear assembly from the mixer.

5. Inspect the pinion gear inside the planetary gear assembly for signs of damage or stripping.
6. If the pinion gear is damaged, remove the old planetary gear assembly.

7. Attach the new planetary gear assembly to the mixer.
8. Align the new planetary gear assembly properly and fasten it securely.
9. Reattach any covers or retaining clips that were removed.
10. Reattach the beater or other attachments.
11. Plug in the stand mixer and test to see if the beater spins.

If the problem persists after replacing these components, consider consulting a professional technician for further diagnosis.

Signs Your Stand Mixer Needs Professional Repair

While some issues can be fixed at home, certain problems may require professional repair or part replacements.

• The motor is running, but there’s a burning smell or smoke.
• The mixer vibrates excessively or makes loud clunking noises.
• Internal parts are jammed or broken beyond what a gear replacement can fix.
• There is noticeable damage to the motor itself.
• The power cord or electrical components show signs of fraying or burning.
• You have already attempted a repair, but the mixer still doesn’t work.

Also Read: How To Clean And Maintain Your Stand Mixer

In Summary

A stand mixer that stops spinning can be frustrating, but most problems come down to worn-out parts that are easy to replace. Strange noises or a beater that won’t move shouldn’t be ignored, as they can lead to bigger and more expensive issues.

Fixing it early saves time and money. If replacing the worm gear or planetary assembly doesn’t solve the problem, the motor might be failing. At that point, professional repair or a new mixer may be the only option. A little troubleshooting can go a long way, and with the right steps, your mixer could be back in action soon.