1. Introduction and Overview
The KitchenAid K400 Variable Speed Blender is engineered to deliver consistent blending results for a variety of ingredients. Its advanced 3-part blending system, featuring a unique ribbed jar design, asymmetric blade, and Intelli-Speed Motor Control, ensures thorough processing of even tough ingredients. This manual provides essential information for the safe and effective operation, maintenance, and care of your blender.

Front view of the KitchenAid K400 Variable Speed Blender, featuring the motor base, 56 oz BPA-free blender jar, and lid. The control dial is visible on the front of the base.
2. Product Components
Your KitchenAid K400 Blender includes the following main components:
- Motor Base: Houses the powerful motor and control panel.
- 56 oz BPA-Free Blender Jar: Designed with unique ribs to create a powerful blending vortex.
- Blender Jar Lid: Features a secure seal and a removable ingredient cap.
- Asymmetric Stainless Steel Blade: Cuts at four distinct angles for comprehensive blending.

The blender's control panel features a central variable speed dial (0-5) and dedicated buttons for Pulse, Ice Crush, Icy Drinks, Smoothie, and Self-Clean functions.

This diagram highlights the key components of the blending system: the ribbed jar for creating a powerful vortex, the asymmetric blade designed to cut at four distinct angles, and the Intelli-Speed Motor Control that senses contents and maintains optimal speed.
3. Setup
- Unpack: Carefully remove all components from the packaging.
- Clean: Wash the blender jar, lid, and removable cap with warm, soapy water before first use. Rinse thoroughly and dry.
- Placement: Place the motor base on a clean, dry, and level surface. Ensure the power cord is easily accessible.
- Assemble: Place the blender jar securely onto the motor base. Align the jar with the base until it clicks into place.
- Lid: Place the lid onto the blender jar and ensure it is firmly sealed. Insert the removable cap into the lid opening.
4. Operating Instructions
The KitchenAid K400 Blender offers versatile control for various blending needs.
4.1 Variable Speed Dial and Pulse Function
- The central dial allows you to select speeds from 1 to 5, providing precise control over blending consistency.
- Turn the dial to the desired speed setting.
- The 'P' (Pulse) setting provides short bursts of power for chopping or quick mixing. Turn the dial to 'P' and release for pulsing action.
- The Soft Start feature automatically begins at a slower speed to draw ingredients into the blade, then increases to the selected speed to prevent splashing.
4.2 Preset Programs
Utilize the dedicated preset buttons for optimized results:
- Ice Crush: Ideal for crushing ice cubes quickly and efficiently.
- Icy Drinks: Perfect for preparing frozen beverages like margaritas or daiquiris.
- Smoothie: Designed to create smooth, consistent smoothies from fresh or frozen ingredients.
To use a preset program, turn the dial to the desired program icon and press the Start/Stop button.
An official video showcasing the KitchenAid K400 Blender's capabilities, highlighting its design and performance in blending various ingredients.
This official video demonstrates the KitchenAid K400 Variable Speed Blender in action, illustrating its ease of use and effectiveness in preparing different recipes.
5. Maintenance and Cleaning
Proper cleaning ensures the longevity and optimal performance of your blender.
5.1 Self-Clean Cycle
- For quick and easy cleaning, use the Self-Clean cycle.
- Add 1 cup (237 mL) of warm water and 1-2 drops of dish soap to the blender jar.
- Secure the lid and removable cap.
- Turn the dial to the Self-Clean icon and press the Start/Stop button.
- Once the cycle is complete, rinse the jar thoroughly.
5.2 Manual Cleaning
- Blender Jar and Lid: These components are dishwasher-safe (top rack only). For hand washing, use warm, soapy water and a non-abrasive sponge. Exercise caution around the sharp blades.
- Motor Base: Wipe the motor base with a damp cloth. Do not immerse the motor base in water or other liquids.
6. Troubleshooting
If your blender is not operating as expected, refer to the following common issues:
- Blender does not start: Ensure the power cord is securely plugged into a grounded outlet. Verify the blender jar is correctly seated on the motor base and the lid is properly closed.
- Ingredients are not blending smoothly: Ensure the liquid-to-solid ratio is appropriate. Add more liquid if necessary. Use the tamper (if included) to push ingredients towards the blades.
- Motor sounds strained: Do not overload the blender. Reduce the amount of ingredients or add more liquid.
- Leakage from the jar: Ensure the lid is securely fastened and the removable cap is properly inserted. Check for any damage to the jar or lid seals.
For persistent issues, contact KitchenAid Customer Service.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | KitchenAid |
| Model Number | KSB4027 |
| Capacity | 56 Fluid Ounces |
| Product Dimensions | 9.06"D x 7.87"W x 15.75"H |
| Included Components | (1) 56 oz BPA-free Blender Jar, (1) Blender Jar Lid |
| Number of Speeds | 5 |
| Voltage | 120V |
| Controls Type | Knob |
| Material Type Free | BPA Free |
| Blade Material | Stainless Steel |
| Item Weight | 12 pounds |
8. Warranty and Support
The KitchenAid K400 Variable Speed Blender comes with a 1 Year Limited Warranty. For warranty claims, technical assistance, or further support, please contact KitchenAid Customer Service. Keep your purchase receipt as proof of purchase.





