Operation Manual

49
4
Maintenance
Trouble Cause Countermeasure Page
The fabric
wrinkles /
puckers
The tension of the upper
thread is too tight
Adjust the thread tension 33
The machine is incorrectly
threaded
Rethread the machine 16-19
Needle is too thick for the
fabric
Use a finer needle to suit the
fabric
27
The needle is burred Insert a new needle 26
Stretch fabric is being sewn Use the ball point needle 27
Lower thread
showing on
the top of the
fabric
Incorrect bobbin threading Rethread the bobbin correctly 16, 17
The tension of the upper
thread is too tight
Adjust the thread tension 33
Incorrect plastic bobbin used
or a metal bobbin is used
Only use the designated
TOYOTA bobbin
14
Upper thread
showing on
the under
side of the
fabric
The tension of the upper
thread is too loose
Adjust the thread tension 33
Incorrect upper threading
(not threaded through the
thread guide)
Rethread the upper thread
correctly
18, 19
The needle
cannot be
threaded with
the needle
threader
The needle position is too
low
Turn the handwheel so that the
line is at the top
9
Needle no. 9/65 is being
used
Use needle sizes 11/75 to
16/100
27
Needle incorrectly inserted Insert the needle correctly 26
The needle is bent Use a straight needle 26
Threading of the needle bar
thread guide incorrect
Rethread the needle bar thread
guide correctly
18
If the above treatments do not solve the
problem, contact the service center as
described in your warranty.
When calling for service, please note the
MODEL and SERIES that are inscribed
on the back of your sewing machine.
SP100 SERIES / SERIE MODEL / MODELE
Manufacturer/ : ZHEJIANG AISIN ELITE
Fabricant MACHINERY & ELECTRIC
CO., LTD.P.R.C.
Importer/ :
Importateur
MADE IN P. R. C. / FABRIQUE A P.R.C.
Designed and engineered by
AISIN SEIKI JAPAN