Here's a photo of the flow restrictor when viewed from the side. Because the flow restrictor tends to collect the most sediment, This is the piece that needs to be cleaned thoroughly to improve the faucet's flow. In some cases, all you'll need to do is rinse the debris off flow restrictor. You may need to use a soft brush to remove the sediment. For difficult-to-remove buildup, soak the flow restrictor in a cup of white vinegar which will dissolve the minerals.