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In “Step-by-Step Instructions: Replacing a Toilet Flush Valve,” you will find a video by Roger Wakefield that provides detailed instructions on how to replace a toilet flush valve. The video emphasizes the importance of checking the seal and considering a replacement if necessary. It guides you through the process of turning off the water supply, draining the toilet tank, loosening and removing the tank from the toilet bowl, replacing the gasket and flush valve, and reassembling the tank with proper alignment and tightness.

The video also suggests considering the replacement of other parts such as the fill valve and handle, and provides tips on adjusting the chain length and checking for leaks after installation. Roger Wakefield, an expert plumber from Texas Green Plumbing, invites the audience to enjoy the videos, leave comments, suggest topics, and subscribe to their channel while emphasizing their mission of saving money in plumbing matters.

Roger Wakefield, a LEED AP and expert plumber, shares valuable insights and tips on replacing a toilet flush valve in his video titled “How To Replace A Toilet Flush Valve – DIY Plumbing.” He highlights the significance of the flush valve in the toilet mechanism and demonstrates the process of replacing it step-by-step. Wakefield advises checking the seal and evaluating the condition of the flush valve before proceeding with the replacement. He recommends turning off the water supply, draining the toilet tank, and using tools like a nut runner and screwdriver to loosen and remove the tank from the toilet bowl.

Wakefield emphasizes the importance of replacing the gasket and flush valve correctly to ensure a tight fit and proper alignment. He also suggests considering the replacement of additional parts like the fill valve and handle while reminding viewers to turn the water supply back on and check for any leaks or issues after installation. With a mission to save money in plumbing, Wakefield invites viewers to subscribe to his channel, leave comments, and suggest topics for future videos.

Replacing a Toilet Flush Valve

Step-by-Step Instructions: Replacing a Toilet Flush Valve

When it comes to maintaining your toilet, checking the seal and replacing the flush valve if necessary is crucial. The flush valve is responsible for regulating water flow during flushing, and a faulty valve can lead to issues such as leaks and inefficient flushing. In this comprehensive guide, we will provide step-by-step instructions on how to replace a toilet flush valve to ensure optimal performance and extend the lifespan of your toilet.

Step 1: Turn off the Water Supply

Before beginning the replacement process, it is important to turn off the water supply to the toilet. Locate the water shut-off valve, typically located on the wall directly behind the toilet or near the floor. Turn the valve clockwise to shut off the water supply. This step will prevent water from flowing into the tank while you work on replacing the flush valve.

Step 2: Drain the Toilet Tank

To avoid any water spillage during the replacement process, it is essential to drain the toilet tank. Start by flushing the toilet to remove most of the water from the tank. Once the tank is mostly empty, use a sponge or towel to remove any remaining water. Pay attention to any hidden areas where water might be trapped, ensuring the tank is completely dry before proceeding.

Step 3: Loosen and Remove the Tank from the Toilet Bowl

To replace the flush valve, you will need to access the inside of the toilet tank. Begin by loosening the tank-to-bowl bolts located on the underside of the tank. Use a nut runner or screwdriver to loosen the bolts, taking care not to overtighten or strip the bolts. Once the bolts are loosened, carefully lift the tank off the bowl and set it aside in a secure location.

Step 4: Replace the Gasket

With the tank removed, it is time to replace the gasket. The gasket ensures a watertight seal between the tank and the flush valve opening. Start by removing the old gasket, taking care not to damage the flush valve opening. Clean the gasket seat on the flush valve opening to ensure a smooth and secure fit for the new gasket. Once the seat is clean, install a new gasket, making sure it is properly aligned and securely in place.

Step 5: Replace the Flush Valve

Now that the gasket is in place, it is time to replace the flush valve itself. Start by removing the old flush valve, and disconnecting it from any attached components or arms. While removing the old flush valve, inspect the flush valve seat for any signs of damage or wear. If necessary, clean or repair the seat before installing the new flush valve. Install the new flush valve, ensuring a tight fit and proper alignment with the gasket and flush valve seat.

Step 6: Reassemble the Tank

With the new flush valve in place, it is time to reassemble the tank. Place the tank back onto the bowl, aligning the tank-to-bowl bolts with their respective holes. Take care to center the tank and ensure it is level before proceeding. Once the tank is aligned, carefully lower it onto the bowl, making sure the tank-to-bowl bolts slide through the corresponding holes without obstruction.

Step 7: Tighten the Tank-to-Bowl Bolts

To secure the tank in place, tighten the tank-to-bowl bolts. Use a nut runner or screwdriver to tighten the bolts evenly, adjusting the tension as needed. It is important not to overtighten the bolts, as this can cause damage to the tank or bowl. Snugly tighten the bolts until the tank feels secure and stable, ensuring the gasket provides a watertight seal between the tank and bowl.

Step 8: Adjust the Chain Length

With the tank reassembled, it is important to adjust the chain length on the flapper. The chain connects the flapper to the handle and controls the opening and closing of the flush valve. Before attaching the flapper back to the handle, adjust the chain length to ensure proper operation. The chain should have just enough slack to allow the flapper to close fully without any interference.

Step 9: Reattach the Flapper to the Handle

Now that the chain length is adjusted, reattach the flapper to the handle. Make sure the flapper securely connects to the flush valve and that there is no resistance or binding. Test the flapper by operating the handle and ensuring it opens and closes smoothly. If the flapper does not operate properly, adjust the chain length accordingly until optimal functionality is achieved.

Step 10: Consider Replacing Other Parts

While replacing the flush valve, it is a good idea to inspect other components of the toilet for signs of wear or damage. Consider replacing parts such as the fill valve or handle if necessary. This proactive approach can help prevent future issues and ensure the overall efficiency and performance of your toilet.

Step 11: Turn the Water Supply Back On

With the replacement process complete, it is time to turn the water supply back on. Locate the water shut-off valve and turn it counterclockwise to restore water flow to the toilet. Monitor the tank for any leaks or issues, and make any necessary adjustments to ensure a proper seal. Check for any leaks around the flush valve and gasket, as well as from any other connections.

Step 12: Check for Leaks or Issues

Once the water supply is turned back on, carefully observe the toilet for any signs of leaks or issues. Pay close attention to the area around the flush valve, the tank-to-bowl connection, and the fill valve. If any leaks or problems are detected, take the necessary steps to address and resolve them. It is important to ensure a properly functioning toilet that operates efficiently and without any leaks.


Replacing a toilet flush valve may seem like a daunting task, but with the right instructions and tools, it is a manageable DIY project. By following the step-by-step guide outlined in this article, you can confidently replace a flush valve, ensuring optimal functionality and extending the lifespan of your toilet. We hope you found this guide helpful and encourage you to leave a comment with your thoughts or suggestions for future articles or videos. Don’t forget to subscribe to Roger Wakefield’s channel for more valuable plumbing tips and information. As Roger Wakefield of Texas Green Plumbing, our mission is to help you save money and maintain a reliable plumbing system.

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Categories: Plumbing Tips & DIY