Product Overview
This manual provides instructions for the TOTO TCU706CR#11 China Lid, designed as a replacement tank cover for TOTO toilet tank models ST706 and ST743S. This lid is finished in Colonial White and is constructed from durable materials to ensure longevity and proper fit.

Image: TOTO TCU706CR#11 Colonial White Toilet Tank Lid. This image displays the top view of the ceramic toilet tank lid in Colonial White color, showing its rectangular shape and smooth finish.
The TOTO TCU706CR#11 lid is specifically engineered to fit the contours of compatible TOTO toilet tanks, providing a secure and stable cover. It includes Velcro tape for enhanced stability, preventing accidental displacement.
Setup and Installation
Follow these steps to properly install your TOTO TCU706CR#11 toilet tank lid:
- Unpack the Lid: Carefully remove the lid from its packaging. Inspect it for any damage during transit.
- Prepare the Tank: Ensure the top surface of your toilet tank (models ST706 or ST743S) is clean and dry. Remove any debris or old adhesive residue.
- Apply Velcro Tape (Optional but Recommended): The lid comes with Velcro tape. Peel the backing from one side of the Velcro strips and adhere them to the underside of the lid, near the edges. Then, peel the backing from the other side of the Velcro strips and carefully align the lid over the toilet tank. Press down firmly to secure the lid and allow the Velcro to adhere to the tank surface.
- Position the Lid: Gently place the lid onto the top of the toilet tank, ensuring it is centered and sits flush on all sides.
- Verify Fit: Confirm that the lid sits securely and does not rock or slide easily. The Velcro tape, if used, will enhance stability.
Note: This lid is designed for specific TOTO tank models (ST706 and ST743S). Verify your tank model number before installation to ensure compatibility.
Operating Instructions
The TOTO TCU706CR#11 toilet tank lid serves as a protective cover for the internal components of your toilet tank. Once installed, no specific operational steps are required beyond ensuring it remains properly seated.
- Accessing Tank Components: To access the toilet tank's internal mechanisms for maintenance or repair, carefully lift the lid straight up and set it aside on a flat, stable surface.
- Replacing the Lid: After accessing the tank, carefully place the lid back onto the tank, ensuring it is centered and stable.
Maintenance
Regular cleaning will help maintain the appearance and hygiene of your toilet tank lid.
- Cleaning: Use a soft cloth or sponge with mild soap and water to clean the lid. Avoid abrasive cleaners, scouring pads, or harsh chemicals, as these can damage the finish.
- Drying: Wipe the lid dry with a clean, soft cloth to prevent water spots.
- Dishwasher Safe: The lid is indicated as dishwasher safe. If using a dishwasher, place it on the top rack and use a gentle cycle with mild detergent.
- Microwaveable: The lid is indicated as microwaveable. This feature is generally not applicable to its primary use as a toilet tank lid but is a material property.
Troubleshooting
If you encounter issues with your TOTO TCU706CR#11 toilet tank lid, consider the following:
- Lid Does Not Fit Properly:
- Verify Model Number: Double-check the model number of your toilet tank. This lid is specifically designed for TOTO ST706 and ST743S tanks. An incorrect tank model will result in a poor fit.
- Check for Obstructions: Ensure there are no foreign objects or debris on the rim of the toilet tank that might prevent the lid from sitting flush.
- Inspect for Warping/Damage: Carefully inspect the lid for any signs of warping, cracks, or manufacturing defects that could affect its fit. If the lid is damaged, contact TOTO customer support.
- Lid Slides or Rocks:
- Use Velcro Tape: Ensure the included Velcro tape is properly applied to both the underside of the lid and the top rim of the tank. This tape is designed to provide stability.
- Level Surface: Confirm that the toilet tank itself is level. An unlevel tank can cause the lid to rock.
- Lid Arrived Damaged:
- If the lid arrived broken or with significant damage, do not attempt to install it. Contact the retailer or TOTO customer support immediately for a replacement.
Specifications
| Model Number | TCU706CR#11 |
| Part Number | TCU706CR-11 |
| Compatible Tank Models | ST706, ST743S |
| Color | Colonial White |
| Material | Polyethylene, Polypropylene |
| Item Weight | 8 Pounds (approx. 3.6 kg) |
| Product Dimensions | 20 x 8 x 2 inches (approx. 50.8 x 20.3 x 5.1 cm) |
| Included Components | China Lid for ST706 with Velcro Tape C. White |
| Dishwasher Safe | Yes |
| Microwaveable | Yes |
| UPC | 739268434738 |
Note on Material: The product title and included components refer to a "China Lid," which typically implies ceramic or porcelain. However, the specifications list "Polyethylene, Polypropylene" as materials. Given the item weight of 8 pounds, the lid is likely made from a durable ceramic or porcelain material, with plastic components potentially used for internal fittings or the Velcro tape.
Warranty and Support
Warranty Description: The TOTO TCU706CR#11 toilet tank lid comes with a One Year Limited Warranty. Please refer to the official TOTO warranty documentation for full terms and conditions.
Customer Support: For technical assistance, warranty claims, or further inquiries, please contact TOTO customer service directly. Visit the official TOTO website for contact information and support resources.
You can find more information and support at the TOTO Brand Store.





