How do you lengthen stitch. The stitches are so
your machine should have a stitch length dial on the right hand side above the flywheel, it might have numbers from 0.5 to 3 or 4, higher number for longer stitch (effectively this moves the foot and feed dogs faster in relation to the needles to make the stitch longer).
If you have the Serge Pro SW432 that your enquiry is linked to and you have not used a serger before, then definitely get hold of the manual, you will need it. Sergers are very different to sewing machines - once you've mastered one, its easy, but there is a learning curve.
Firstly, ALWAYS extend the thread aerial up, you'll see loads of images of sergers sitting nicely with the aerial in the lowered position, great for moving them to avoid damage. But they won't work well, a serger seams at 1500 stitches per minute and the thread streams off the cones so you need to ensure there is a good clear feed via the aerial to the tension dials.
Buy good quality thread cones and keep it out of the sun and dust. Cover your machine when not in use (lower the aerial first). You could start with white, grey and black thread as this will cover a lot of fabric prints/colours etc. To change thread colour, you will need to cut and knot on the new thread for the two loopers (right hand side cones) - do this about 6 inches above the first thread guide, and then chain off to feed these through down to the needle plate, when you see the new colour come through okay, stop. Repeat the process for the needle thread or threads (3 or 4 thead depending on what stitch you are sewing) but stop chaining when the thread knot is above the needles. Stop, loosen these tension dials and pull the thread down, cut out the knot with scissors and thread the new colour through the two needles. Use threading wires if you have them, or tweezers. Pull both these and the two looper threads together under the pressure foot, lower the foot, turn your tension dials back to 5 and chain off. The thread sequence is important, mostly top looper, bottom looper, then needles, this is so much easier demonstrated than explained.
If you can find a classroom/shop offering overlocking user lessons, go take a couple, its well worth the money. Otherwise go to you-tube and watch all the videos you can search on sergers, threading, etc.
Good luck with your serger, please respond with 4 thumbs if this has been helpful to you. :-)
on May 25, 2011