28
Trouble
Cause
Remedy
7. Knife does not cut fabric 1. Blade worn
Replace the knife with a new one.
Contact your authorized Brother dealer.
2. Knife lock lever set to lock
knife
Move the knife lock lever to unlock the
knife.
(See page 8.)
8. Thread not passing
through eye of needle
1. Incorrect threading position
Correctly position the mark on the
handwheel.
(See page 6.)
2. Improper threading
Thread correctly. (See pages 14 - 19.)
3. Needle threader change switch
incorrectly set
Set the needle threader change switch
correctly.
(See pages 18 - 19.)
4. Needles incorrectly installed
Install needles correctly.
(See page 12.)
9. Looper not threaded
1. Pipes not joined
Move the air threading switching lever,
and then turn the handwheel toward you
until the pipes become joined.
(See page 14.)
2. Not enough thread inserted
into looper thread insertion
hole
Insert 1 to 2cm (1/2 inch) of thread into
the looper thread insertion hole.
(See page 15.)
3. No excess thread before
inserting into looper thread
insertion hole
Leave 30 to 40 cm (12 to 16 inches) of
excess thread before inserting it into the
looper thread insertion hole.
(See page 15.)
4. Thread caught somewhere
Release the thread from where it is
caught.
5. Lint accumulated in pipe
Using the included threading wire, thread
the looper to remove the lint from the
pipe.
(See page 29.)
6. Thread (such as woolly nylon
thread and thick thread) used
is difficult to insert into looper
thread insertion hole
Thread using the threading wire or the
spun thread.
(See pages 16 - 17.)
10. Machine not operating 1. Machine not turned on
Turn on the machine.
(See page 6.)
2. Power supply plug not inserted
into power outlet
Insert the power supply plug into a power
outlet.
(See page 6.)
3. Presser foot lifting lever raised Lower the presser foot lifting lever.
(See page 7.)
4. Material plate cover, front
cover, or both open
Check for open covers, and then close
them.
(See pages 6 and 29.)
