Sewconsult.com Division Sewing Educational Warehouse
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material presented on this site, downloaded or in print form is intended
for information purposes only. Any adjusting you do to your own sewing
equipment is at your own risk.
Timings
model 830
Timings
1130 1230 series
Timing
model 170
The
pin length for timing pin "43" is 49.5mm. It is 5.5mm in diameter. The
other pins just require the right diameter to fit in each pinning hole.
Timing
model 180
The
pin length for timing pin "43" is 49.5mm. It is 5.5mm in diameter. The
other pins just require the right diameter to fit in each pinning hole.
Tensions
model 830
To check the bobbin tension, insert a
bobbin wound with medium weight thread into the bobbin case. Remove the
hook from the machine. Snap the bobbin case onto the hook. Hold the hook
and bobbin case by the bobbin thread and jerk the thread once or twice.
The bobbin and hook should move down a bit. If the hook does not stop
moving down the tension is too loose. If the hook does not move the
tension is too tight.
If the tension is too tight, turn the
screw counterclockwise ¼ turn at a time and retest. If the tension is
too loose, turn the screw clockwise ¼ turn at a time and retest.
Continue to loosen or tighten the tension screw until the hook only
moves down about ½” when you jerk the thread.
It
is rare that you have to adjust your bobbin tension. Mainly if the
tension spring was bent or for specialty sewing.
Top
tension
The top tension is controlled with the tension dial. Normal tension
is when the indicator is centered. After the bobbin tension is set the
tensions should balance in the center of the fabric as shown.
If adjustment is required, sew a test and turn the top tension dial
until the right tension is achieved. Open the top cover and locate the
adjusting screw. Loosen the screw and center the indicator. Tighten the
screw and recheck the adjustment.
Your
machine will sew on most fabrics without requiring tension adjustment.
If you are using heavier thread or very thick fabric you may have to
increase the tension.
The
result you should look for in tension is for the knot to be formed in
the center of the fabric.
Tensions
1130 1230
Tensions
model 170 180
