Kitchen Aid stand mixer just started going really fast at the lowest speed. I tried checking the sensor as some have suggested but is still goes really fast. It's only been used a few times. Is there another area that controls the speed?

See following video. Fast forward to 7:30 and it shows the on/off contact. Around a minute earlier it shows the the speed lever, spring, and link.

https://youtu.be/Pi8ufwlOtqU

The speed adjustment is defective. You will likely need a service centre if you cannot open it up and find the problem and change any defective parts etc.

smell the motor housing for any burnt smell.suggest you buy a new one.theire not worth fixing

Look for any broken wires on the speed control plate under the back cover. Check the carbon brushes under the side caps. Brushes only go in one way so be careful.

The number in your question (9706529) is for the worm gear.
What is the model Kitchenaid mixer you have?

Call the Kitchen Aid small appliance warranty office and they will tell you where the authorized repair person is that is close to you.

Your best bet on what sounds like an electrical switch problem is to return it for a replacement. The warranty on your product is for one full year. The store where it was purchased should offer a replacement in a snap as long as you have the original receipt. If not, have you registered the product with Kitchen Aid? If so they will replace or repair it at no charge.

Hi. Go to mendingshed.com. Look up Kitchenaid Mixer Parts. Near the top of the page locate their FREE Kitchenaid Service Manual in Adobe format. Download it. This valuable document will help you with your troubleshooting of the speed control and anything else that needs fixing. This manual supports your K5SS. Mending Shed also carries Kitchenaid parts.

If you order parts from Kitchenaid, be prepared to wait at least a month for them to arrive!

If this solution has assisted you, please rate it. Good luck! ricardok45

Some of the gears may have broken or slipped off. You'll need t open it up to see why the shaft from the motor will not spin or you will burn out the motor with the power on trying to make it go. It might be a DIY job if you can see an obvious problem like a slipped gear, otherwise take it to a repair specialist.

Two small tabs located on each side of the sensor hold it in the motor housing. Pushing one side with a small flat screwdriver while pulling gently up on the sensor will work.