Duerkopp Adler 261-140342, Operating Instructions Manual

Page: 27 / 62

If you notice any of the problems listed below refer to the "Remedy" column for instructions on how to solve the problem.
Our dealer or a qualified technician to carry out the necessary adjustment.
Phenomena Possible cause Remedy
Page
①
The thread take-up lever is not at its
highest position at the sewing start
Set the thread take-up lever to the
highest position at the sewing start
②
The thread end is too short for the
needle hole at the sewing start
Appros50
㎜
of thread should be coming
out of the needle hole
③
The upper thread tension is too strong Adjust the upper thread tension
①
when cut thread, the bobbin is racing Replace the bobbin
4
②
the length of base line inside bobbin is
short and cannot appear base line
Replace the bobbin
4
③
the pinhole upper line is too short after
cutting thread
adjust thread tension
①
When the needle is bent Replace the needle
②
The quality of the needle is poor Select good quality needle
③
the needle is not entirely into the
needle bar
Fully insert the needle
④
When the needle hits the sewing hook Adjust the timing and clearance between
the needle and the sewing hook and also
the position of the needle guard 10
⑤
The needle is too thin for the thread Use a suitable needle
⑥
The needle hits against the throat plate adjust needle and needle plate position
upper line
and base line
cannot cut
①
fixed knife and move knife are abrasion
,blunt
change fixed knife and move knife 11
①
When the needle is inserted in a wrong
way
Install the needle correctly 4
③
hook timing is not good to cooperate
start in low speed and check slip stitch,
revise time cooperation of hook
②
the base line is not fasten when cutting
check whether there is base guide slot, if
not, exchange hook
needle mark
is
not
consistent in
observe feed
and
reverse
feed
①
the slope of feed dog cannot adjust
well
Adjusting the feed dog incline
9
Upper line
comes out of
the
needle
hole at the
sewing start
④
upper looper fixed too high thread
being take-up
adjust the position of upper looper
The thread
comes out of
the
needle
hole at the
sewing start
The needle is
broken
⑦
The needle hits against the presser
foot
adjust needle and press foot position
upper line
cannot cut
②
the distance of thread tension spring is
too long
decrease the distance of thread tension
spring
base line
cannot cut
①
cutting quantity cannot adjust well
Check the cutting quantity, adjust the left
and right position of cutting thread cam,
so that it can reach proper scope
11
使 用 说 明 书
Operating Instructions
18
DURKOPP
ADLER
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