PE-400D FAQs & Troubleshooting PE-400D Not your product? Sort by Updated Date Popularity 3 Results 1. 12/12/2018 It is difficult to pass the thread through the needle bar thread guide(hook). 2. 24/01/2014 UPPER THREADING 3. 07/04/2009 Place a spool of thread on a spool pin. Getting Ready FAQs & Troubleshooting