How To Replace Kohler Flush Valve Gasket 87998

Replacing a Kohler flush valve gasket 87998 is a simple task that can be completed in a matter of minutes. By following these step-by-step instructions, you can ensure that your toilet is functioning properly and avoid costly repairs.

Materials You’ll Need

• Kohler flush valve gasket 87998
• Adjustable wrench
• Rag or sponge
• Bucket

Step-by-Step Instructions

1. Turn Off the Water Supply

Locate the water supply valve behind the toilet and turn it clockwise to shut off the water supply. Flush the toilet to remove any remaining water in the tank.

2. Remove the Toilet Tank Lid

Lift the toilet tank lid and set it aside.

3. Disconnect the Water Supply Line

Using an adjustable wrench, disconnect the water supply line from the flush valve. Place a rag or sponge under the connection to catch any dripping water.

4. Remove the Flush Valve Nut

Use the adjustable wrench to loosen the flush valve nut located at the base of the flush valve. Do not remove the nut completely.

5. Remove the Flush Valve

Carefully lift the flush valve straight up and out of the toilet tank.

6. Remove the Old Gasket

Inspect the old gasket and look for any signs of wear or damage. Use a rag or sponge to wipe away any debris or water from the flush valve.

7. Install the New Gasket

Align the new gasket with the flush valve and press it into place. Make sure the gasket is seated properly and there are no gaps.

8. Reinstall the Flush Valve

Place the flush valve back into the toilet tank and align it with the gasket.

9. Tighten the Flush Valve Nut

Use the adjustable wrench to tighten the flush valve nut, but do not overtighten.

10. Reconnect the Water Supply Line

Hand-tighten the water supply line to the flush valve. Use the adjustable wrench to further tighten the connection, but do not overtighten.

11. Turn on the Water Supply

Turn on the water supply valve behind the toilet. Check for any leaks around the flush valve. If there are leaks, tighten the flush valve nut or the water supply line connection.

12. Flush the Toilet

Flush the toilet several times to test the new gasket. Make sure the toilet is filling and flushing properly.

Troubleshooting

If you encounter any problems after replacing the flush valve gasket, here are some troubleshooting tips:

• Toilet is not filling: Check the water supply line to make sure it is connected properly and that the water supply valve is turned on.
• Toilet is overflowing: The flush valve may not be seated properly or the gasket may not be sealing correctly. Check the gasket and flush valve for any damage or debris.
• Toilet is leaking: Tighten the flush valve nut or the water supply line connection. If the leak persists, you may need to replace the flush valve.

Answers to Your Questions

Q: How often should I replace the flush valve gasket?
A: The flush valve gasket should be replaced every 2-3 years, or as needed if you notice any leaks.

Q: Can I use a different type of gasket?
A: It is recommended to use the Kohler flush valve gasket 87998 specifically designed for Kohler toilets.

Q: What are the signs of a worn flush valve gasket?
A: Signs of a worn flush valve gasket include leaks, slow filling, or a toilet that does not flush properly.

Q: Is it difficult to replace a flush valve gasket?
A: No, it is a relatively simple task that can be completed in a matter of minutes.

Q: Can I replace the flush valve gasket myself?
A: Yes, you can replace the flush valve gasket yourself by following the instructions provided in this guide.