Trouble
Cause
Remedy
Page
I
r-
Needle is too thick.
-
Replace with needle appropriate for
v
material and thread.
r-
Incorrect adjustment of differential feed
amount.
r--
Refer to section entitled
differential feed ratio".
"Adjusting the
20
Excessive wrinkles
- -
Improper presser-foot pressure.
-
Adjust to proper presser-foot pressure.
19
procuced when sewing
-
Excessive thread tension.
-
Adjust to proper tension.
15
Refer to sections entitled "Adjusting the
19
-
Feed dogs incorrectly installed.
-
presser-foot pressure" and "feed dog
27
height".
-59-
