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KitchenAid 6-Quart Stand Mixer Manual

PURPOSE: The purpose of this manual is to familiarize the housewares technician with techniques required to repair the KP (Professional), KT (Epicurean) and KD (Custom) Stand Mixers.


Purpose and General Information
Product Specifications, Safety and Tools
Power Cord Replacement
Disassembly of Gearcase and Planetary
Component Access
Drive Train and Planetary
Worm Gear Assembly Variations
Repairs to Bowl Support and Column
Motor Replacement
Speed Control Assembly Service
Early Domestic Wiring Diagram
Current Domestic Model Wiring Diagram
Export Model Wiring Diagram
Problem Guide
Export Model Parts Table


IMPORTANT: This Manual does NOT cover Repair Procedures for the:

K45SS – KSM90 – K5SS – KSMC50 – KSM103 – KSM110 – KSM150 – KSM151
Refer to : LIT4177310-B for Repair Procedures on these models.

GENERAL INFORMATION: (For Domestic Models Only.) These KitchenAid Units are 6 Quart Capacity 115 Volt Stand Mixer that has the following key products features:
  • Heavy Duty Motor- Delivers the power to mix double batches of even heavy cookie and bread doughs and cake batters. KP Models = 525 W. KD Models = 500 W. KT Models = 475 W.
  • Heavy Duty Transmission – All metal gears are designed for many years of trouble-free operation.
  • Enhanced Electronic spend Sensor – Monitors operation to maintain precise speed regardless of load.
  • 10-speed control – Lets the user select the right speed for the mixing job, from very high to very slow stir.
  • Overload TCO Control – Helps eliminate overheating.
  • Soft Start Mixing Feature –Helps Prevent ingredient “splash-out” and “flour puff” at startup.
  • New Design 6 Quart Capacity Polished Stainless Steel Bowl – Big enough to handle double batches of even heavy Mixtures. Wide open design makes adding ingredients easy.
  • Hinged Hub Cover – Flips up allowing easy installation of attachments – never leaves the mixer.
  • New Ventilation System – Cools the entire mixer from the base through the mixer head, prolonging mixer life.
  • Unique Mixing Action – Reaches every section of the bowl to blend ingredients thoroughly – no need to rotate the bowl.
  • All Metal Construction – Broad base eliminates “mixer walk” while 5 rubber feet protect the counter and promote stable operation.
  • Clear 2-Piece Pouring Shield – New Design with an enlarged chute to facilitate addition of ingredients.
  • Ergonomically Designed bowl Handles – Bowl and Bowl lift Lever are contoured to comfortably fit hand
  • Seamless Design – No crevices or cracks to trap ingredients – makes cleanup easy.
The Product Specifications and Dimensions for the 6-Quart Stand Mixer are Listed in a separate section.

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PRODUCT SPECIFICATIONS – The following product Specifications and Dimensions are subject to change without notice.
*Dimensions are listed in inches and (centimeters).
*Weights are listed in pounds and (kilograms).
  • Electrical Requirements – 115 Volts AC – 60 HZ – Single Phase for Domestic Models.
  • Height – 16.6 inches (41.9 centimeters)
  • Width – 11.3 inches (28.7 centimeters)
  • Cord Length – 50.8 Inches (129.0 Centimeters)
  • Net Width – 25.0 pounds (11.3 Kilograms)
  • Carton Height – 19.4 inches (49.3 centimeters)
  • Carton Width – 13.3 inches (33.8 centimeters)
  • Carton Depth – 17.3 inches (43.9 centimeters)
  • Shipping Weight – 25.5 pounds (11.6 centimeters)
  • Colors – Many Colors are available.

  • ITEMS INCLUDED WITH PRODUCTS – The following items are included with the product at this time:
    In KP Models: Burnished Flat Beater, Burnished Dough Hook, Professional Wire Whip, 2-Piece Dual Purpose pouring Shield.
    In KD and KT Models: coated Flat Beater, Coated Dough Hook, Professional Wire Whip, 2-Piece dual Purpose Pouring Shield.

    REPLACEMENT WARRANTY – IF the Stand Mixer fails within the first year of ownership, KitchenAid will arrange to deliver an identical or comparable replacement to your door free of charge and arrange to have the failed mixer returned. For more information concerning the product warranty contact the Customer Satisfaction Center at (800) 541-6390.


    This Service Manual is written for the Professional Service Technician who has familiarity with the KitchenAid Stand Mixer.
    The following Safety Guidelines should be adhered to when servicing this product.
  • The workplace will be dry and sanitary at all times and all units should be inspected for cleanliness before any work is started.
  • Visually inspect the unit requiring service in a well laminated area.
  • A mild, non-abrasive dish washing soap solution and clean towel can be used to wash any unit requiring attention.
  • The hands of the Service Technician should be clean at all times during the service procedure.
  • ESD (Electro Static Discharge) protection should be provided when servicing the electronic components.

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  • The work place for the stand mixer will have properly grounded AC outlets that adhere to all Local Electrical codes that are applicable at the time of the repair
  • The Stand Mixer Power Cord should always be inspected first before testing the mixer operation.
  • Do NOT run the mixer if the Power Cord is damaged – replace it.
  • All disassembly and assembly procedures discussed in this manual should be conducted with the unit disconnect from the AC supply.
  • Do NOT leave the unit unattended while running the mixer for bowl clearance or any other check.
  • Always unplug the unit immediately after concluding electrical tests.
  • The Service Technician should wear Protective Eyewear at all times when conducting a repair on the Stand Mixer.
  • Loose fitting sweaters, shirt sleeves or bracelets should NOT be worn while servicing the Stand Mixer.

  • TOOLS REQUIRED- The following tools are necessary to service the KitchenAid Stand Mixer.

    PHILLIPS SCREWDRIVERS- A Medium Size for numerous 8-32 x 5/8” screws used in Lower cover. A Larger Size will be needed on the 1/4-20 x 3/4” screws used to secure the Pedestal to the base. A Power Screwdriver is recommended for the larger screws.
    STRAIGHT SCREWDRIVER- A Medium Size for removing the 10-24 x 1/2” Latch Bowl Spring and for adjusting the Bowl Clearance Adjusting Cam. A small size for removing the “C” Clip at the bottom of the Bowl Lift Rod.
    SNAP RING PLIERS – Used to remove the (2) Retaining clips from the top of the Planetary. Always wear Safety Goggles when using Snap Ring Pliers.
    NEEDLE NOSE PLIERS – Used for removing Hall Effect Sensor, Motor and Power Cord Leads from the Control Board Assembly.
    DRIFT PUNCH- Used for removing the (2) Retaining Pins from the Planetary Assembly Shaft and Agitator Shaft.
    SMALL HAMMER – Used for the Light tapping force required to remove the (2) Retaining Pins discussed above.
    VOLT-OHMMETER- For Diagnosis a Volt-Ohmmeter is useful in confirming continuity and an In-Line Wattmeter is particularly helpful in confirming Transmission drag problems.

    POWER CORD REPLACEMENT – Replacing the Power cord on the KitchenAid Professional 6 Mixer is an excellent way for the service technician to become familiar with the product.
    The Power cord on this product must be replaced if it is damaged or abused in any way.
    Before you begin, review the section in this manual on Disassembling the Gearcase and Planetary so you will be familiar with the removal of the Trim Band and Gearcase Motor Housing.
    1. Gaining Access- Remove the Trim Band and the Gearcase Motor Housing Screws and set these parts aside.
    The gearcase Motor Housing is a good place to store your fasteners. Always place the Gearcase Motor Housing on a soft surface to avoid scratching the paint.
    At this point you should have (1) 8/32 x Ό Phillips Screw that held the Trim Band and (4) 8/32 x 5/8” Phillips Screws that secured the Gearcase Motor Housing.
    2. Clear the Deck – You will notice that the Lower Gear Case has a total of (9) additional 8/32 x 5/8” Phillips Screws that are used to secure the ground lug, control assembly, transmission cover and Motor.
    Remove all of these screws from the Lower Gearcase in the following order (2) Control Assembly, (4) Transmission Housing, (2) Motor and (1) Power Cord Ground Lug.

    NOTE-Carefully loosen the Transmission cover (do not remove) from the Lower Gearcase.
    The Transmission cover is packed with grease and it is best to keep the cover in place after the mot has been removed. This cover will be loosened and tipped open later to free the motor.
    3. Control Board Leads – using Needle Nose Pliers, remove the Power Cord Leads from the Control Board.

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    4. Motor and Control Board Removal – The Motor is still attached to the control Board by its leads and by the 3-Conductor Hall Effect Cable.
    It is not necessary for you to remove these leads when replacing the Power Cord.
    Carefully tip the Transmission Cover up to free the Motor Drive, then carefully lift the Motor/Control Board up from the Lower Gearcase Cover and set them aside.
    5. Secure Transmission Cover – After removing the Motor and control Assembly, temporarily secure the Transmission Cover by replacing the (4) 8/32 x 5/8” Phillips Screws.
    This step will allow the service technician to rotate the Lower Cover for access to the Power Cord and not spill any grease.
    6. Column Assembly Screws – At this point the Power Cord is fully exposed an you can processed with the access by removing the (3) 1/4 - 20 x 3/4” Phillips Screws that hold the Lower Cover to the column.
    These are larger than the 8/32 x 5/8” Screws and will often require a power Screwdriver to be loosened.
    7. Power cord Replacement – The old Power Cord can be freed from the Lower Cover by hand once the Column has been removed Always cut the old cord into small pieces and then dispose.
    Follow these steps in reverse order after you have positioned the new Power Cord into the Lower cover.
    CONFIRMATION – Always test the Mixer for proper operation after replacing the Power Cord.


    The Transmission Housing can be removed by hand after the (4) 8/32 5/8” Phillips Screws have been removed. Grasp the Transmission Housing securely and simply lift it upward. Be careful as the Attachment Hub Bevel Gear is in this Transmission Housing.

    Insert Diagram.

    This Gear can be removed later by hand for inspection. Carefully set the Transmission on your paper towels after inspecting it’s condition.
    Replace the Transmission Housing if cracks are evident. The Hall Effect Sensor Cable should be disconnected from the Control Board so that the Board can be moved away from the Transmission Housing.

    Insert Diagram

    Make sure that no grease comes in contact with the connector at the end of the Hall Effect Sensor Cable.

    DRIVETRAIN TERMINOLOGY- Before Servicing the Gearcase lets review the rotating gears that make up the Gearcase. Additional details follow for servicing each of these gears.
    • Attachment Hub Bevel Gear- this gear is located in the Transmission Housing and can be removed by hand from the Transmission Housing for inspection.
    • Bevel Gear- this is the top gear on the Planetary Shaft. The bevel gear is held to the Planetary Shaft with a Snap-ring. This Snap-Ring must be removed with Snap-Ring Pliers to remove the Bevel Gear.
    • Worm Follower Gear-This is the bottom gear on the Planetary Shaft.
    • The Worm follower Gear can be removed from the Planetary Shaft after the Bevel Gear and Retaining Pin are removed.

    The Planetary is free to drop after the Pin is removed.
  • Worm Gear- this is an assembly that has a “Front” and “Rear” bearing on each end of the Worm Gear Shaft. This worm gear assembly can be lifted from the lower gearcase after the Transmission Housing is removed.

  • Insert Diagram

    The Technician should be aware of the three different Worm Gear Variations that have evolved with the product, as different replacement parts will be required, depending on the Date Code of the unit.
    SEE: Worm Gear Assembly Variations Section.
    Before removing the worm gear, notice that both bearings are oriented so the flats of the bearing are vertical.

    Insert diagram

  • Planetary Pinion Gear- this gear is attached to the Planetary Agitator Shaft and can be accessed by removing a Snap Ring. Retaining Pin removal is not needed to remove the Pinion Gear.