Introduction
The KitchenAid K400 Variable Speed Blender is engineered to deliver exceptional blending performance, ensuring perfect taste and consistent texture for every blend. Its innovative 3-part blending system is designed to handle even the toughest ingredients with ease. This manual provides essential information for the setup, operation, maintenance, and troubleshooting of your new blender.
Setup
Unpacking and Initial Cleaning
- Carefully remove all parts from the packaging.
- Wash the blender jar, lid, and removable parts with warm, soapy water before first use. Rinse thoroughly and dry.
- Wipe the blender base with a damp cloth. Do not immerse the base in water.
Assembly
- Place the blender jar securely onto the motor base. Ensure it is properly seated.
- Place the lid firmly onto the blender jar. The lid features a removable ingredient cap for adding items during blending.
- Ensure the blender is unplugged before assembly or disassembly.

Image: The blender jar with its unique asymmetric blade, ready for use.
Operating Instructions
Controls Overview
- Variable Speed Dial: Allows for precise control over blending speed, from low to high (1-5).
- Power Button: Turns the blender on and off. No need to turn the dial to 'off' to stop blending.
- Preset Programs: Dedicated buttons for specific blending tasks:
- Ice Crush: Optimized for crushing ice cubes.
- Icy Drinks: Ideal for frozen beverages and cocktails.
- Smoothie: Perfect for smooth and consistent smoothies.
Basic Blending Steps
- Ensure the blender is on a stable, flat surface.
- Add ingredients to the blender jar. For best results, add liquids first, then soft ingredients, followed by hard ingredients and ice.
- Securely place the lid on the jar.
- Plug the blender into a grounded electrical outlet.
- Press the Power Button to turn the blender on.
- Select your desired speed using the variable speed dial or choose a preset program. The Soft Start feature will gradually increase speed to prevent splatter.
- Blend until desired consistency is achieved.
- Press the Power Button to turn the blender off.
- Unplug the blender before removing the jar or pouring contents.

Image: The K400 blender in action, creating a smooth blend.

Image: Preparing a blended drink with fresh ingredients.
Features
- 3-Part Blending System: Combines a ribbed jar design, unique asymmetric blade, and Intelli-Speed Motor Control for optimal blending.
- Ribbed Jar Design: Creates a powerful vortex, pulling ingredients into the blade for thorough blending.
- Unique Asymmetric Blade: Cuts at four distinct angles to handle tough ingredients like kale and almonds.
- Intelli-Speed Motor Control: Senses contents and maintains optimal speed for consistent results.
- 5-Speed Variable Dial: Offers precise control over texture, from smooth to chunky.
- 3 Preset Recipe Programs: Includes Ice Crush, Icy Drinks, and Smoothie for one-touch convenience.
- Soft Start Feature: Motor starts at a slower speed to pull ingredients into the blade, then quickly increases to the selected speed to prevent splatter.
- Durable Construction: Features a solid steel base for stability and longevity.

Image: A variety of ingredients showcasing the blender's versatility.
Maintenance and Cleaning
Self-Clean Cycle
- After use, add 1 cup (237 ml) of warm water and a drop of dish soap to the blender jar.
- Secure the lid.
- Select the "Self-Clean" program (if available, or run on a medium speed for 30-60 seconds).
- Rinse the jar thoroughly.
Manual Cleaning
- Always unplug the blender before cleaning.
- The blender jar, lid, and ingredient cap are top-rack dishwasher safe.
- Wipe the motor base with a clean, damp cloth. Do not use abrasive cleaners or immerse the base in water.
- Ensure all parts are completely dry before reassembling or storing.
Troubleshooting
Before contacting customer service, please refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Blender does not turn on. | Not plugged in; power button not pressed; jar not properly seated. | Ensure power cord is securely plugged in. Press the Power Button. Check that the blender jar is correctly placed on the base. |
| Ingredients are not blending smoothly. | Too little liquid; too many ingredients; ingredients too large. | Add more liquid. Reduce the amount of ingredients. Cut larger ingredients into smaller pieces. Use the tamper (if included) to push ingredients towards the blade. |
| Blender stops during operation. | Overload protection activated. | Unplug the blender and let it cool down for 10-15 minutes. Remove some ingredients if overloaded. Plug back in and restart. |
| Loud noise or burning smell. | Motor strain; foreign object in jar. | Immediately turn off and unplug the blender. Check for any foreign objects. If the issue persists, discontinue use and contact customer support. |
Specifications
| Feature | Detail |
|---|---|
| Brand | KitchenAid |
| Model Number | KSB4027CU |
| Color | Contour Silver |
| Capacity | 56 Fluid Ounces (approx. 1.65 Liters) |
| Product Dimensions (D x W x H) | 7.59"D x 9.02"W x 15.8"H |
| Included Components | (1) 56 oz BPA-free Blender Jar, (1) Blender Jar Lid |
| Number of Speeds | 5 (Variable) |
| Power Source | Corded Electric |
| Voltage | 120 Volts |
| Material Type Free | BPA Free |
| Blade Material | Stainless Steel |
| Item Weight | 12 pounds |

Image: Product dimensions for the KitchenAid K400 Blender.
Warranty and Support
For detailed warranty information and customer support, please refer to the warranty card included with your product or visit the official KitchenAid website. You can also find additional resources and contact information at www.kitchenaid.com.
Note on Videos: This manual does not include embedded product videos as no official "Seller" type videos were available in the provided data. Please refer to the manufacturer's official channels for any available video content.






