Step-by-Step Guide to Replacing Tank to Bowl Bolts
Tank to bowl bolts, also known as closet bolts, are crucial components in your toilet's flush mechanism. Over time, these bolts can corrode, break, or become loose, leading to leaks and other issues. Replacing them is a straightforward DIY task that can save you from costly repairs. Here's a comprehensive guide to help you through the process.
Tools and Materials Needed
- New tank to bowl bolts (ensure they match the size and type of your existing bolts)
- Adjustable wrench
- Flathead screwdriver
- Replacement washers (if necessary)
- Plumber's grease (optional, for lubrication)
Step 1: Preparation
Before you start, turn off the water supply to your toilet by closing the valve located behind the toilet. Flush the toilet to empty the tank, then use a sponge or towel to absorb any remaining water in the tank.
Step 2: Removing the Old Bolts
Locate the bolts at the base of the toilet tank. They are usually covered by a plastic cap. Remove the cap using a flathead screwdriver if necessary. Using an adjustable wrench, turn the bolt counterclockwise to loosen and remove it. You may need to use some force, as the bolts can be quite tight. Repeat this process for the second bolt.

If the bolts are too corroded or stripped, you may need to use a hacksaw to cut them off. Be careful not to damage the toilet or the bolts' threads.
Step 3: Cleaning the Area
Use a cloth or brush to clean the area where the bolts were located. This will help prevent any debris from getting into the new bolts and causing issues.
Step 4: Installing the New Bolts
Apply a small amount of plumber's grease to the threads of the new bolts. This will help lubricate the bolts and make them easier to install and remove in the future.

Insert the new bolt into the hole at the base of the tank. Use your fingers to turn the bolt clockwise until it's snug. Then, use the adjustable wrench to tighten the bolt further. Be careful not to overtighten, as this can strip the threads or crack the porcelain.
Repeat this process for the second bolt.
Reattaching the Tank to the Bowl
With both bolts securely in place, reattach the tank to the bowl by aligning the holes and sliding the bolts through. Place a washer over each bolt, then use the nut to secure the tank to the bowl. Tighten the nut using an adjustable wrench, but again, be careful not to overtighten.
Final Touches
Replace the plastic cap over the bolts, if necessary. Turn the water supply valve back on and flush the toilet to test the new bolts. If there are no leaks and the toilet flushes correctly, your repair is complete!