The knob that allows the needle to be center or right or left sew

I have a euro pro x model 420 and the knob on the front adjusts the needle position from left to center to right.
jeannie

ManualsLib has the manual for the BabyLock Quest Plus (BLQ2-PL) here: https://www.manualslib.com/manual/537167/Baby-Lock-Quest-Plus-Blq2-Pl.html#product-Quest%20PLUS%20BLQ2-PL . The needle stop position button is the top button above the reverse button. To adjust the needle position for straight stitches, you press the stitch width button on the sewing machine. Pressing the - button will move the needle to the left; pressing the + button moves it to the right. The machine should start with the needle centered. See page 49 of the manual for the pictures of the machine button and the stitches that allow for needle position changes. To avoid damage, you can't move the needle left or right for most zig-zag stitches. The needle will move to the left and right from the center based on the desired stitch width.

I hope this helps. If your sewing machine needle isn't centering the needle correctly when you turn on the machine, it may need to be serviced.

Cindy Wells

Consult your owner's manual. Somewhere on your machine there is a knob, dial, or a screen option to move the needle right, center, or left. (Try page 25 under Variable Needle Position)

http://homeappliance.manualsonline.com/manuals/mfg/janome/4800.html

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Look at the knob which creates the zig-zag stitch (1-4) at the top right of your 930. In the center of that is a silver knob that rotates right and left. That silver switch moves the needle position right and left.

A transcript from the Elna SU manual reads as follows, and the manual can be viewed on line at http://sewingonline.co.uk/instructions/elnasp/

First make a few trial runs with a scrap of material exactly as the buttonhole will be stitched, with the machine adjusted as you intend to use it.
1. Use the embroidery and buttonhole foot. It can be chnged without a screwdriver by using the fixation screw.- With the stitch width knob at "0", turn the selector to zigzag "1".
2. De-center the needle to the left.
3. Set the stitch width knob at 2, with the solid mark on top.
4. Set the stitch length dial between 1/2 and 1/4.
5. a) Mark the desired length on the material.
b) Sew the first side of the buttonhole. Stop with the needle in the material and the mark (right).
c) Raise the foot and pivot the material round the needle. Lower the foot and raise the needle.
6. a) Set the stitch width knob at 4.
b) Sew a few stitches. Raise the needle.
7. a) Set the stitch width knob at 2.
b) Sew the second side and stop just short of the length of the first. Raise the needle.
8. a) Set the stitch width knob at 4.
b) Finish off the buttonhole by sewing a few stitches. Raise the needle.
9. a) Set the stitch width knob at "0".
b) Sew a few stitches to fasten the threads, holding the material back by hand.
10. Open with the buttonhole knife, which you will find in the accessory box.

there should be a sliding knob indicating L- C- R for left, center or right.

Turn the lower knob on the right hand side of your sewing machine. This is the control for the stitch selector (like zig-zag, buttonhole, etc.). You will see 3 straight stitch settings. One is for left, one for center, and one for right. Align the orange indicator with the center line & voila.

Try locating the needle position knob that shows a single dot in each of the 3 positions (left, center and right).

It might look like this
Right (___*_), Ctr (__*__), Left (_*___)

Turn the big knob on the right of your Singer 1507 machine so that the vertical stitch line in the center. (Currently your machine most likely has the vertical stitch line to the left.) Don't push your needle manually; you will damage the needle.

Maybe the needle isn't in correctly. The flat side of the needle faces right, Also, manual says it will use only Singer Red Band regular point style 2020 size 14 needles. I would think any brand, regular point, size 14 would work.

Threading this dog it not intuitive, and keeping it threaded is a continous task.
Next: Threading
!. Unwinding off spool clockwise --- up from the back through the **** on top . Do NOT wrap thread around tension disc (little round thingy) that is at the ****.

2.On the left end of the knob that looks like a sideways spool there are two silver discs. Slide the thread between them. Make sure it doesn't jump out (at any point during your task)and go one step to the left, between disc and sewing machine. Then down to:

3.Thread straight through 1/4" metal loop at knob-like thread guide. then thread makes a u-shaped trip up the knob-shaped guide to the take-up lever.. Thread tends to slip behind this guide, but needs to stay in the center.

4. Through the take-up lever, right to left, then down to thread guide next to needle, pulls through from back to front then through needle left to right.

OR IT could be the bobbin holder....not even going there right now. Good luck.
Sharon