What To Do When - Janome JP720 Servicing Manual

Condition
1. Skipping 1. Needle is not inserted properly.
Stitches
2. Needle is bent or worn.
3. Incorrectly threaded.
4. Needle or thread are
inappropriate for fabric being
sewn.
5. Sewing on stretch fabric.
6. Presser foot pressure is too weak.
7. In appropriate needle bar height.
8. Inappropriate needle to hook
timing.
9. Inappropriate needle to hook
clearance.
2. Fabric not 1. Foot pressure foot is too weak.
moving
2. Incorrect feed dog height.
3. Feed dog is in down position.
4.Thread on bottom side of fabric is
jammed up.
5. Feed dog teeth are worn.

What to do when

Cause
Insert the needle properly.
Change the needle.
Rethread.
Use the recommended sewing needle and
thread.
Use a HA x #11 blue tip needle.
Adjust the presser bar level to make the
pressure stronger.
See mechanical adjustment " Needle bar
height ".
See mechanical adjustment " Needle to
hook timing ".
See mechanical adjustment " Clearance
between needle and hook ".
Adjust the presser bar level to make the
pressure stronger.
See mechanical adjustment " Feed dog
height ".
Raise the feed dog.
Make sure to bring both needle and bob-
bin threads under the foot when starting
sewing.
Change the feed dog.
1
How to fix Reference
P. 11
P. 12
P. 13
P. 15