Janome 8050 Service Manual page 4

condition
3. breaking 1. initial Sewing Speed iS
Upper too faSt.
thread.
2. thread path iS incorrect.
3. needle iS bent or dUll.
4. top tenSion iS too Strong.
5. needle Size iS
inappropriate for fabric.
6. needle eye iS worn.
7. needle hole in needle
plate iS worn or bUrred.
4. breaking 1. bobbin holder iS
bobbin incorrectly threaded.
thread.
2. too mUch thread iS woUnd
on the bobbin.
3. lint iS StUck inSide the
bobbin holder.
4. thread qUality iS too low.
5. thread iS jamming aroUnd
the bobbin holder.
5. needle 1. needle iS hitting the
breakeS needle plate.
2. needle iS bent or worn.
3. needle iS hitting the hook.
4. fabric iS being pUlled too
Strongly while Sewing.
caUSe
Start with mediUm Speed.
USe the proper thread path.
replace with a new needle.
adjUSt top tenSion correctly.
USe appropriate needle for
fabric and thread in USe.
change the needle.
repair the hole or replace the
needle plate.
Set the bobbin thread
correctly.
adjUSt the poSition of bobbin
winder Stopper.
clean the bobbin holder.
change to a high qUality Sewing
thread.
clear oUt the jamming thread.
See mechanical adjUStment
"needle drop poSition".
change the needle.
See mechanical adjUStment
"clearance between needle and
tip of the rotary hook".
gUide the fabric gently while
Sewing.
2
how to fix reference
p. 10
p. 14