This applies to all “Professional” and UK “Pro Line” bowl-lift mixers (“Professional 5 HD”, “Professional 5 Plus”, “Professional 6”, and “Professional 600” in the US, “Pro Line” and “Artisan” in the UK) and the Accolade 400. The series model numbers for these machines begin with KG25, KV25, KB26, KD26, KP26, KL26, and KN15. (This list is inclusive but not comprehensive. KitchenAid has a lot of different model numbers for what is essentially the same mixer inside.)
If you are going to DIY this job, you will need the following items:
- Gear housing gasket: part #WP9709511 (see important note below)
- Motor shaft seal: part #WP9706247
- Grease (“food safe”, NSF H-1 rated, NLGI #2 viscosity, see below)
- Snap ring pliers
If you are repairing a failed worm follower gear, or if the mixer is an older machine and you are overhauling it for the first time:
- Worm follower gear, part #W11086780
Important note about the gear housing: before beginning the job, unplug the mixer and remove the top cover; inspect the transmission housing at the front of the mixer. If it is plastic, you need to replace it with the upgraded metal housing. The metal housing kit (which includes a gasket) is part #8212396.
Here is a video which shows how to replace a failed worm follower gear.
Grease Recommendations
The grease must be NLGI #2 viscosity, and NSF H1 or ISO 21469 rated for food safety. I like the Super Lube 41160 (one 14oz can is enough for more than two mixers); you can buy it on Amazon. Valid alternatives are Mobil FM222, Phillips P66 Food Machinery Grease, CRC SL35600, CRC SL35610, and CRC SL35615.
If the greases mentioned here aren’t available, any reputable name brand that meets the requirements will suffice. I recommend avoiding anonymous “white label”, repackaged, or otherwise unidentified grease.
You will need about four ounces of grease.
Gear Housing Replacement
If you are replacing a plastic gear housing, check the sleeve bearings on either end of the main gear shaft. If there are signs of cracking or deformation, replace both bearings, as well as the thrust bearing. The part numbers for these are WPW10170080, WPW10170081, and WP9703445 respectively.
Planetary Replacement
If you are replacing a separated planetary assembly, here are part numbers for color-matched replacements. Note that in some cases, the exact color match is no longer available. In that case you can choose a replacement color that is a close match or a suitable contrast. The color code is the last two letters (not numbers) in the model number, on the label under the base. A replacement planetary assembly will cost in the range of US$40-60, depending on the finish.
If a match for your color code isn’t listed here, please get in touch and I’ll be happy to look it up for you. Provide the full model number from the label under the base.
Here’s a video showing how to replace the planetary assembly.
| Part Number | Color/Notes |
|---|---|
| WP9708180 | Color code ER (Empire Red) |
| WP9708172 | Color code WH (gloss white) |
| WP9708176 | Color code OB (Onyx, gloss black) |
| 9708182 | Color code BU (Cobalt Blue, no longer available) |
| 9708531 | Color code CM (Cinnamon, no longer available) |
| W11157091 | Matte white (replaces “Meringue” and “Matte Milkshake”) |
| W11123171 | Matte black (replaces “Licorice” for color code LC) |
| W10327955 | Color code CU (Contour Silver) |
| WP9708175 | Color code MC (Metallic Chrome, replaces most silver hues including SL and PM) |
| 9708753 | Color code NP (Nickel Pearl) |
| WP9708173 | Color code GR (Imperial Gray) |
| W10577733 | Color code AQ (Aqua Sky) |
| WP9708174 | Color code BK (Imperial Black) |
Check the Bowl Column Screws
If this is the first time the mixer is being serviced and it is a bowl-lift model, remove the motor and check the three large screws beneath. They are probably loose. Remove each screw, apply some Loctite 242 or Vibra-Tite 121, and tighten each screw firmly using a #3 Phillips-head screwdriver. 1/4″ external-tooth lock washers are a good addition. You can also replace the screws with 1/4-20 x 3/4″ socket-head cap screws, which use an Allen key drive. This allows you to tighten each screw more firmly, but take care not to overtighten the screws which will strip the threads.
Parts sources:
- Appliance Parts Pros
- Goodman’s
- Reliable Parts (US)
- Reliable Parts (Canada)
- Repair Clinic
- Sears Parts Direct
- Seneca River Trading
Updated: 3/11/2026