Single Thread Models 
Model D (III) & D (III) LX - Fischbein Type. (for Kosha & Revo)
Model D(III).
Newlong NP-7A Type.

Double Thread (Single Needle) Model 
Model DT - N1 - Newlong NP-3II Type. 

For Start-up of Machine installation of any kind is not necessary. Merely arrange a box, shelf or bracket so that, between bags, operator can conveniently set machines down. Alternatively the machine can be hung or suspended at the desired height from a hook or overhead support. For this, you can use our Coil Spring Suspension Unit.("Machine Spares & Accessories Section)

Do not operate machine from direct current (DC) or 440 volt line unless machine has been specially ordered for it. Use only 220/230-volt AC line.
Machine feeds automatically. Don't pull or hold it back as it feeds across the bag.
Don't try to operate machine with a bent or blunt needle.
Don't disturb main bearing, part No.66605, or looper cam, part No.66310. They are timed and set at factory.

Threading The New Machine.
Thread Tension in the Machine. 

In most cases, your new machine will have the Thread Cone already installed & the thread correctly passing through all the points. 

To install new cone of thread, push thread-clamping bolt, part No.66804, through hole in top of cone and securely lock in position with wing nut, part No.66805. Cone of thread must not rotate or wobble on the thread stand. Follow illustration, being sure that thread passed between the two tensions discs, parts No.D114. Thread the needle from outside to the inside of the machine. Leave about 2" of thread dangling through the needle, and proceed to sew the bags in normal manner.

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Thread tension is the degree of resistance the thread meets in passing between the tensions discs, Part No. 66114. Too loose a tension will cause the thread to tear or will leave loose loops of thread on the bag instead of nice firm stitches. Too tight a tension will also cause the thread to tear or will cause textile bag material to pucker. In either case, the machine may not chain off. To alter the amount of tension, loosen upper tension nut, part No.66116. Turn lower tension nut, part No.66117, about 1/8 turn at a time-up to loosen tension, or down to tighten tension-testing on material until desired stitch appearance is obtained. Be sure to re-lock upper tension nut.

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