Whats does b_9d mean. My mixer wont start to mix. The power is good but it tels me b_9d.

If the motor itself is slowing down, that is one thing. However, if you mean by "dog" that there is what sounds as if a gear is slipping then the solution is straight forward. The worm (follower) gear needs to be replaced.

There are videos on the net which show how to do this and the Service Manual can be found at:

http://www.kitchenaidparts.eu/documents/pdf/service-manual/classic-svc-manual-new-email-version.pdf

It sounds like stripped gears, does the mixer still turn on? The beater just wont spin anymore?

If that is the case the worm gear probably stripped out, that is part number w10112253, or for a quicker easier fix you can get that gear in an assembly for a couple more dollars, that would be part number 240309-2.

Here is a link to those parts on our website:

http://www.mendingshed.com/kawormgear.html
http://www.mendingshed.com/kitchenaidgearassy.html

Firstly, I think you mean "flour".
Put in your ingredients. Cover the mixer, head and bowl, with a dishtowel. Turn on mixer to "stir" (or lowest speed). But! Mix only for 1 or 2 seconds. Repeat this, with bowl covered, until flour is mixed in enough not to fly out.
Happy baking!

Assuming the mixer is overheating (and not the transformer), first check (with a multimeter) the voltage being supplied to the mixer from the transformer and ensure it is near 120V. Next, do you know the powerline frequency in the country you're in? The mixer (assuming it came from US) was designed for 60Hz US power. Many other countries use 50Hz, which could cause overheating if the mixer is used heavily. When 60Hz equipment is used on 50Hz power, it normally must be "derated" meaning it must be "underworked" as compared to its original capabilities.

Be sure to test the voltage going to the mixer, from the transformer, not only when the mixer is off, but be certain to test it in use, mixing whatever it is you are mixing -bottom line is to be sure the transformer continues to output 120V under load, with the mixer loading the transformer.

If all is OK with the power going to the mixer, then the problem is either in the mixer or the problem is how it is being used. What are you mixing with it - are you overworking the mixer? Does the mixer always overheat or only with particularly demanding jobs (cut down batch size in this case). What gear are you mixing in? If overheating in second gear, try mixing the same batch in first gear. If you have or can find a user's manual, it probably gives reccommended batch sizes for various typical products you might mix, be sure to follow these recommendations and "derate" for 50Hz if necessary.

It's possible the motor is weak from a long life spent working hard. A weak motor will draw excessive current and overheat. Where is the mixer hottest? The front at the gearbox/transmission or the rear where the motor is located? Maybe the transmission is lacking lubracation and needs a grease change. There a many possibilities for your mixer to overheat, and I hope this helps.

Your mixer may still be good, let it cool down and then check it out, If it runs OK then there is no problem. The motor in your mixer probably over heated from trying to mix bread dough which will make any mixer work hard. These mixers will get warm when over worked but unless heavy smoke was coming out and you were getting a burning enamel smell it is probably OK. Let it cool and try it but I suggest you not use it for bread any more.

just open it up and lubricate the motor

Hi. Since I can't tell how much you have taken apart, I'll start from the beginning.

Remove the silver band, remove the top cover. At the top front of the mixer locate the transmission housing. If it's plastic, inspect it carefully for cracks around the screws and the body of this housing. If you find cracks, you have found the cheap plastic part that kitchenaid still installs in new mixers, and the cause of your trouble. They know that it's substandard but don't care enough to place a recall notice on this part. It may not please you to know that their replacement part is METAL like the original part should have been. "For the way it's made"! Indeed!

If you intend to repair the mixer yourself, go to kitchenaid's website, enter your model # and locate the parts list for your mixer. Download the drawings, they will assist you with your project.

Be sure to tell kitchenaid what you think of their cheap plastic part.

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

Hi. Goto www.mendingshed.com and download the free Kitchenaid Service Manual.

You may have overloaded the mixer with bread or cookie dough, causing internal damage to the gears.

If you plan to do the repair yourself, you might also consider removing the old grease and oil. Remove, clean and regrease the planetary gear assembly as well. This will add years of life to your mixer.

Regrease with Chevron FM ALC EP-2 product.

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

This sounds like an issue of beater to bowl adjustment, which can come out of alignment naturally over time and with use of the machine.

If the flat beater is striking the bottom of your bowl, this may cause the locking mechanism to loosen and may cause the mixing head to "bounce" during use.

Your Use and Care Guide will cover the "beater to bowl adjustment," which you can do at home in a few minutes with a flathead screwdriver.

Take it to a local repair shop and they should be able to fix it in no time.