After Threading The Loopers; When Not To Use Air Threading - Brother 884-B20 Owner's Manual

After threading the loopers

1. To separate the pipes, move the air threading
switching lever until locked.
2. Close the front cover <A>. Closing the front
cover also closes the knife cover <B>.
3. Lower the presser foot lifting lever.
NOTE:
The front cover will not close unless the pipes are
separated.

When not to use air threading

It may be difficult to insert woolly nylon thread or
thick thread into the looper thread insertion hole,
or threading with these types of thread may not
be possible, even after pressing the air threading
pushbutton.
In these cases, thread the loopers with either of
the following methods.
• Using the included threading wire
• Using thread that can be used with air threading
(spun thread)
16
Using the threading wire
CAUTION
Turn off the machine.
IMPORTANT
- Do not press the air threading pushbutton while
using the threading wire, otherwise the machine
may be damaged.
1. Pass 2 to 3 cm (about 1 inch) of the sewing
thread through the loop of the threading wire 1 .
2. Insert the threading wire into the looper thread
insertion hole 2 .
3. Feed in the threading wire by hand until it comes
out of the hole 3 at the end of the looper.
4. Pull out the threading wire until enough thread
has come out 4 .