How to Refill a STIHL AutoCut C4-2 Linehead Spool as used on STIHL FSA 65 / 85 Battery Line Trimmer

Here we load/reload the nylon onto a STIHL FSA 65 (also same head as FSA85) Autocut C4-2 head. This is the spool / linehead used on the STIHL Battery Trimmer models FSA 65 and FSA 85