TOTO SS113#51
TOTO SS113#51 SoftClose Round Toilet Seat User Manual
Model: SS113#51 | Brand: TOTO
1. Product Overview
The TOTO SoftClose toilet seat is engineered for comfort and durability, featuring an innovative SoftClose hinge system. This design ensures the seat and lid close gently and quietly, preventing sudden slams and reducing the risk of injury. Constructed from solid, high-impact plastic, it offers a high-gloss finish and is designed for long-lasting performance.

Image 1: TOTO SoftClose Round Toilet Seat (Ebony) with lid open.

Image 2: TOTO SoftClose Round Toilet Seat (Ebony) with lid closed.
Key Features:
- SoftClose Action: Reduces injury and eliminates "Toilet Seat Slam" for quiet operation.
- Ergonomic Design: Provides comfortable seating.
- Durable Construction: Made from solid, high-impact, high-gloss polypropylene.
- Molded Bumpers: Integrated for stability and protection.
- Dimensions: Approximately 16-1/2 inches in length, 14 inches in width, and 3-1/8 inches in height.
2. Setup and Installation
This section provides detailed instructions for installing your TOTO SoftClose Round Toilet Seat. All necessary mounting hardware is included for a straightforward installation process.
Before You Begin:
- Ensure you have a Phillips head screwdriver.
- Verify that your toilet bowl is a standard round shape for proper fit.
- Remove any existing toilet seat and clean the mounting area thoroughly.
Step-by-Step Installation:
- Position the Seat: Place the new TOTO SoftClose seat onto the toilet bowl, aligning the mounting holes on the seat with the holes on the toilet bowl.
- Insert Mounting Bolts: Insert the provided mounting bolts through the seat's hinge holes and down into the toilet bowl's mounting holes.
- Secure the Nuts: From underneath the toilet bowl, thread the nuts onto the mounting bolts. Hand-tighten them initially.
- Adjust Alignment: Ensure the seat is centered and aligned correctly on the bowl. The seat's design allows for slight adjustments to achieve a perfect fit.
- Final Tightening: Using a Phillips head screwdriver, firmly tighten the mounting bolts from the top. Do not overtighten, as this can damage the seat or bowl.
- Test SoftClose: Gently lower the seat and lid to confirm the SoftClose mechanism is functioning smoothly.

Image 3: Easy installation process using top-tightening mounting bolts.

Image 4: TOTO SoftClose Seat Fit Chart illustrating dimensions for round and elongated bowls. This model is designed for round bowls.
3. Operation
The TOTO SoftClose toilet seat is designed for simple and quiet operation. Its primary feature is the integrated SoftClose hinge system.
SoftClose Functionality:
To operate the SoftClose feature, simply push the seat or lid down gently. The specialized hinges will engage, allowing the seat and lid to descend slowly and silently to the bowl. This eliminates loud slamming noises and prevents potential damage to the toilet or seat, as well as reducing the risk of pinched fingers.
Note: Do not force the seat or lid down quickly, as this can interfere with the SoftClose mechanism over time. Allow the system to work naturally.
4. Maintenance and Care
Proper care and maintenance will ensure the longevity and appearance of your TOTO SoftClose toilet seat.
Cleaning Instructions:
- Daily Cleaning: Use a soft cloth or sponge with mild soap and water. Wipe the entire surface of the seat and lid.
- Stubborn Stains: For more stubborn stains, a non-abrasive, all-purpose bathroom cleaner can be used. Apply to a cloth first, then wipe the seat.
- Rinsing: Always rinse the seat thoroughly with clean water after cleaning to remove any soap residue.
- Drying: Dry the seat completely with a soft, clean cloth to prevent water spots.
- Avoid: Do not use abrasive cleaners, scouring pads, harsh chemicals (e.g., bleach, acid-based cleaners), or aerosol sprays directly on the seat, as these can damage the finish and the SoftClose mechanism.
5. Troubleshooting
This section addresses common issues you might encounter with your TOTO SoftClose toilet seat.
Common Issues and Solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Seat or lid does not SoftClose properly (slams). | Hinge mechanism may be worn or damaged due to forceful closing. | Ensure the seat is not being forced down. If the issue persists, the hinge mechanism may need replacement. Contact TOTO customer support. |
| Seat is loose or shifts on the bowl. | Mounting bolts are not sufficiently tightened. | Re-tighten the mounting bolts from the top using a Phillips head screwdriver. Do not overtighten. |
| Surface appears scratched or discolored. | Use of abrasive cleaners or materials. | Avoid using abrasive cleaners, scouring pads, or harsh chemicals. Use only mild soap and water with a soft cloth for cleaning. |
6. Product Specifications
| Specification | Detail |
|---|---|
| Model Number | SS113#51 |
| Brand | TOTO |
| Color | Ebony |
| Material | High-Impact Plastic (Polypropylene) |
| Shape | Round |
| Product Dimensions (L x W) | 16.5 inches x 14 inches |
| Item Weight | 5.75 pounds |
| UPC | 300717266349, 739268029460 |
| Installation Method | Floor Mounted (Top-tightening) |
7. Warranty Information
The TOTO SS113#51 SoftClose Round Toilet Seat comes with a One Year Limited Warranty from the date of purchase.
This warranty covers defects in material and workmanship under normal use and service. For full details regarding warranty terms, conditions, and claims, please refer to the official TOTO warranty documentation or visit the manufacturer's official website.
For warranty service, retain your proof of purchase and contact TOTO customer support.
8. Customer Support
If you require further assistance, have questions about installation, operation, or need to inquire about warranty service, please contact TOTO customer support.
For the most up-to-date contact information and resources, please visit the official TOTO website:
You may also refer to the User Manual (PDF) provided by the manufacturer for additional details: Download PDF Manual