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Re: How do I change the lower blade on my Juki MO-816...
Usually, the lower blade should be changed by a technician. The upper blade can be replaced by the user, but the lower blade requires some minute specifications that use special tools.
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hi there,
which blade you change? upper or lower one?
for lower one just make the top surface for blade aqual with throat plat.
for upper lower turn handwheel to make blade at lowest position in that time the upper lower must be lower than lower blade by arround 2.5mm and keep in your main the two blade also must be very close no space between it.
best regards
ashraf abozid [email protected]
CAIRO - EGYPT
How to Thread Juki MO-134 Serger from watching lady at Lyles.
Turn upper blade up. Push in first then turn up.It makes threading easier.
Blue Thread upper looper first.
Pull thread through tension knob. Don'tjust lay it there. (She thought that is what I must have done)
Orange Thread lower looper next.
Pull thread through tension knob as inthreading upper looper.
Adjust lower looper so it is right nextto upper looper so that their points are almost together and directly belowsewing needles. Lower looper will be in front of upper looper (I believe).
With tread from upper looper pulledback, slightly lift lower looper above upper looper and thread. I think this isright.
Pull thread back with other thread.
Tension is the key. Remember that.
Yellow: Thread left needle first.Remember tension. Pull thread through curled wire on left side of needle arm.
Green: Thread right needle. Rememberabout tension. Pull thread through curled wire on right side of needle arm.
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Note: Before sewing turn the wheel tomake sure the stitches are going together correctly.
Open the font of the serger and the instructions will be printed on the serger or on the door.
Raise the presser foot and set the tensions to zero when threading.
Turn the hand wheel so the upper looper (curved one) is at it's highest point and thread it first, and then the lower looper.
With some sergers you must thread in a certain sequence. This should be indicated in the instructions on the serger.
Set the tensions back to normal ( 4 - 6), lower the presser foot and run a length of stitching to see if the threads are knitted together as they should before you start serging your project.
first, pull out the bvlades and make surte they are sharp. It could simply be that they are dull. Next, line tyhe bottom blade up level to the surface of the needle plate. The top blade should be adjusted to where it slices against the botom blade. You may have to experiment with the height adjustment on the top blade, assuming you have a suitable cutting edge.
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