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Got A Problem - Lets See If We Can Help You
THREADING
All Portable Bag Closers thread very
similarly. The thread leaves the cone and will be passed thru the
thread eyelet directly above it (1). There may be a second guide just
prior to the Tension (2). Pass the thread around the tension (3)
making sure that it sits well between the discs. Pass the thread
thru the next thread guide (4). The Needle bar will have a hole thru the
top of it (5). The thread is passed thru this. Next bring the thread down
the front plate, passing it thru the thread guides or holes (6) until you
reach the needle (7). Pass the thread thru the needle eye from the
outside of the machine to the inside of the arm. Leave 50-60cms of thread
loose thru the needle to allow the first stitch to form.
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NEEDLES
Make sure you have the correct needle type and size for your machine.
If in doubt - ASK ! The needle is the weakest link in the chain, so
change it regularly as follows. Unplug your machine and lay it on it's
side. Loosen the clamping nut and remove the old needle.
Insert a new needle into the machine as far as it will go into the needle
bar. Make sure that the long groove faces left when viewed from the
front of the presser foot and the little recess in the needle faces right
(towards the inside of the arm of the machine). Re-tighten the
needle clamp nut.
TIP Always use a good quality needle such as
GROZ BECKERT or
SCHMETZ (which are available from us).
At the first sign of a stitching problem, always change the needle.
Bent and contaminated needles are the biggest cause of stitching problems.
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NEEDLE - LOOPER
RELATIONSHIP Often referred to as the 'timing', an
exact relationship between the needle and the looper is vital for correct
operation of your machine. Each brand will have it's own system of
adjustment, so here is an overview of what to look for.
When the needle is at bottom dead centre, the looper will have completed
it's travel backwards. There will be a distance between the point of
the looper and the needle. This is called the 'drop back'. As the
needle starts to rise, the looper moves forward on it's front stroke,
passing the needle (in the scarf) as close as possible without actually
touching it. The looper will pass above the eye in the needle
by about .5mm, thus picking up the needle thread. When
the needle descends, the looper will either hold the thread loop open, or
will move sideways on its 'avoid' motion (depends on brand) to allow the
needle to pass into the previous thread loop thus locking the previous
stitch. Each Brand of machine will have it's own method of
setting, so please refer to your manufacturers operating handbook for the
procedure.
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EXCHANGING FEED DOG
Over
time friction wears the peaks off the teeth on the Feed Dog and mis-feeding
or a irregular stitch size occurs. If this evident, then replacement of
the feed dog will be required. When installing a
new feed dog firstly position it correctly onto
the feed dog carrier block and just 'nip' the
fixing screw. Now set the height of the new Dog. Ensure
the peaks of the feed dog teeth are 2.8mm above
the throat plate when the feed dog is in it's T.D.C.
position. Finally, tighten
the fixing screw.
TIP If wear is evident on the Feed Dog, check also the
underside of the Presser Foot for 'Grooving'.
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