I was taught to begin by threading into the tiny hole by going inside the bobbin pushing thread to the outside, then pull the thread down the middle large hole that sits on the machine spindle. Before inserting into the bobbin area I trim the thread close to the bobbin.
I use thread all the way till the bobbin is empty with no issues. Had 6600 P over 2 years.
Hope this is helpful
Teresa in McKinney, TX
a new member