Brother 884-T23 Operation Manual page 80

The numbers indicate the thread path for each of the
numbered needle bars. Be very careful to correctly thread the
needle bars.
b Pass the thread through the number 1 hole in the
thread guide just above the spool, and then pass the
thread through the number 1 hole in the thread guide
toward the front of the machine.
1 Number 1 hole in the thread guide above the spool
2 Number 1 hole in the thread guide toward the front of the
machine
78
c Pass the thread through the hole in the number 1 upper
thread guide and pull the thread toward you.
1 Hole in upper thread guide
d Hold the thread with both hands, and then pass it
under the guide plate from the right.
a
1 Upper thread guide plate
e Wind the thread clockwise once around the number 1
thread tension disc.
1 Thread tension disc
2 Pass thread in a clockwise direction at this location on
the tension disc.