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How to Fix a Toilet that is Not Filling Up or Slowly Filling: How to Remove 400A Cap Assembly

How to remove and replace the cap assembly of the 400 model fill valve. This procedure applies to all 400 model fill valves. This video will help if your toilet tank is not filling up or is filling up slowly. To read more about this solution, please click here: Toilet Not Filling Up or Filling Slowly

To download our free guide to fix common toilet problems please click here: Fluidmaster Toilet Repair Guide

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How to Fix a Toilet that is Not Filling Up or Slowly Filling: How to Remove 400A Cap Assembly