How to Clean Under the Bobbin Case Spring

This is just a quick video we made for a customer who had questions about the bobbin case tension. This tutorial will help teach you how to clean lint out from under the bobbin case spring with a pin as well as how to do the bobbin case "yo-yo" test. This test is not foolproof and can sometimes vary depending on how much force is used in the process, but it can certainly help in a pinch when trying to set the bobbin case tension. For the most accurate setting, please see our updated tutorial here.