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8. THREAD TENSION
8-1. Adjusting the thread tension
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8-2. Presser foot pressure adjustment
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8. THREAD TENSION
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1. Adjust the upper thread tension properly by turning up
per thread adjusting screw e.
2. Adjust the lower thread tension properly by turning
lower thread adjusting screw e.
Adjust the presser foot pressure by turning wing nut G so
that the pressure Is just enough to feed the work positively
and keep the work from slipping .
In case of Machines with puller the puller pressure can
be adjusted as appropriate to the work by turning
presser adjusting screw e.
8. THREAD TENSION
8-3. Adjusting the stitch length
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• Turn off the power supply before adjusting the stitch length, otherwise the machine will operate if the treadle
is pressed by mistake, which could result In injury.
However, the motor will keep turning even after the power is switched off as a result of the motor's inertia.
Wait until the motor stops fully before starting work.
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8-4. Puller feed adjustment (Machines with puller)
CAUTION
• The numerals on the machine pulley scale represent the
stitch length (mm), however the actual stitch length will
vary depending on the type and thickness of material be
ing used.
1. Open the front cover e.
2. While pressing the feed adjustment button•• turn the
machine p_ u lley toward you slowly. (The feed adjust•
ment button O will move further inward.)
3. While still pressing the feed adjustment button 0, keep
turning the machine pulley until the desired numeral
appears in the canter of the pulley cover windows•·
• The higher the value of the numeral, the larger the
stitch length becomes.
Release the feed adjustment button O.
(Check that the feed adjustment button O pops back
out again.)
e.
4. Close the front cover
NOTE:
Do not press the feed adjustment button O while the
machine is operating, as doing so may damage the
machine parts.
When sewing with the stitch length set close to the
maximum length, you will need to adjust the needle
guard in accordance with the type of material and
the type of thread being used.
1. With feed adjusting button 8 lightly pressed with your
finger, turn the pulley toward yourself until feed adjust
ing button O goes in one step deeper.
2. Keep pressing feed adjusting button 0, and turn the
pulley to set your desired feed position on the scale to
the reference line.
The more your turn the pulley toward yourself, the
smaller will be the feed.
Adjust the puller feed after seeing the finished
stitches of the work (Refer to page 13).
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