Inspect and Clean Fill Valve Flow Restrictor

What happens here

If flushing the supply line didn't resolve the low water flow, the next step is to inspect the fill valve's flow restrictor. First, shut off the toilet's water supply valve completely. Disconnect the flexible supply line from the bottom of the toilet tank. Place a container underneath to catch any drips. Locate the black threaded plastic connection where the supply line attaches to the fill valve. Inside this opening, there is often a small, ribbed plastic or rubber insert, which acts as a flow restrictor or diaphragm. Take a flathead screwdriver and carefully insert the tip into the bottom of this assembly. You don't want to bend the screwdriver too much; instead, gently wedge it against the side of the insert and pull it straight down to extract it. Once removed, inspect the insert for any debris, mineral buildup, or damage. Clean it thoroughly if dirty. After inspection and cleaning, push the insert back into its original position, ensuring it's seated correctly. Reconnect the supply line to the toilet tank, tighten it securely, then turn the water supply valve fully back on. Finally, flush the toilet to observe if the water flow has improved.

Goal: Ensure the fill valve's flow restrictor is clear and functioning