Would like to know how to thread a twin needle on a Pfaff 7570

put the bobbin in the bobbin carrier correctly so that the thread unwinds in the right direction

This may be helpful:

Understanding Thread Tension Threads

Sewing Machine Problem 1 Thread Breakage

Sewing Machine Thread Keeps Breaking

It is quite possible that there are still some stray threads stuck or wrapped somewhere in the machine that are preventing the machine from operating properly. If unable to locate what is holding the machine, service may be required.

How to Troubleshoot Pfaff Sewing Machine eHow

Seams Like Paradise

Tension has thread caught in it

PFAFF Mail Repair Garry Machine


..

if your wanting to sew with double needles, thread as usual & add the second spool of thread & thread the same as you did the first needle

Hello,

The Pfaff 7570 Creative Designer is a computerized sewingand embroidery machine that has the ability to connect to the computer, andhave embroidery designs sent to the embroidery machine. The sewing andembroidery machine has many features, including hundreds of general sewingfunctions, a separate embroidery module, and on-screen editing features. TheCreative Designer 7570, manufactured in the 1990s, was the first sewing andembroidery combination machine ever made by Pfaff.

1. Usingthe Sewing Machine
1 Turn on your sewing machine using the "On"button located just below the turn wheel on the right side of the machine.Thread your Pfaff 7570. Note that Pfaff sewing machines thread from left toright, not right to left like other sewing machines. The upper tension discsshould be raised at their highest position while threading, and the presserfoot should be raised up until you thread the needle. Drop the presser footright before you thread the needle. The prevents thread problems during use. 2 Insert a full bobbin and retrieve the bobbin threadthrough the thread plate. Raise your sewing foot and needle to its highestposition; hold the needle thread taught with your left hand, lower the needleinto the thread plate using your right hand, and then raise the needle. As youraise the needle, the needle thread will catch the bobbin thread, and pull itup. There should be a loop of thread intertwined with the needle thread. Usetweezers, your finger, or a straight pin to retrieve the bobbin thread that isvisible through the thread plate, and pull it through the plate. 3 Place the fabric under the presser foot, and drop thepresser foot. Choose the stitch you want to use from the top stitch display,right above the top thread feed. Press the '0-9" button located on thesewing machine's front panel, and a display screen will come up. Input thethread number, and press the 'OK' button located on the sewing machine's frontpanel. The stitch will display, and you are ready to sew. Repeat Step 3 foreach stitch you want to use.

2. SettingUp the Embroidery Unit
1 Turn the sewing machine off. Take out the embroiderymachine unit, locate the connection bushing on the back of your embroideryunit, and match it up with the connection bushing on your sewing machine. Theconnection bushing should be located next to a yellow sticker on yourembroidery unit, and somewhat resembles a serial port on a computer. Slide theembroidery unit onto the sewing machine with the sewing machine turned off. Connectto the bushing carefully as you slide the embroidery unit onto the sewingmachine. Use your embroidery unit manual if you need assistance. 2 Insert an embroidery card. Your embroidery unitshould contain an embroidery card labeled embroidery card 1. Use that or useanother Pfaff 7570 card that you own. Turn on the sewing machine. 3 Open the bobbin case area just below the threadplate, and lower the feed dogs by pushing the feed dog switch to the right.Press the card button located on the front face of your sewing machine. Adisplay with pop up; choose embroidery designs or monogram and a new screenwill pop up with your design choices. Choose the design you want, and press"OK." A checklist screen appears. Do everything on the checklist, andpress "OK." Use your embroidery unit manual if you need help. 4 Start embroidery by pressing the foot pedal. At thistime, your hoop should already be attached to the embroidery unit becauseyou've already gone through the checklist. Your embroidery manual displayscolored picture diagrams that are very helpful in understanding everything inyour checklist menu.
Thanks for using fixya

I presume you want to twin needle sew?

So you need to have two thread spools on pins to do this. Most machines will have two spool pins at the back for this purpose, sometimes they are retractable pins so you would just need to pull the second one up.

or sometimes a seperate pin in the accessory box that you can mount onto a hole somewhere for this purpose.

Rather than buy two reels of thread in the same colour to twin needle sew, you could also wind a second bobbin off (only half full should be plenty), then pop this onto one of the pins and the main thread spool on the other.

Hope this helps you out, I couldn't actually find an image of the back area of this model but most quality machines have two pins as standard.

Use at least a 14/90 needle and make sure the presser foot lever is down.

Thread the first thread guide, then halfway around the small metal disk (counter clockwise) and down between the tension disks, back up and through the take-up lever, back down to the needle bar thread guide and through the eye of the needle :)

First make sure your needle is in correctly. Then make sure you are threading the machine correctly especially make sure you thread the take-up lever. Make sure your tension dial is at a 4 to 5. if this does not work, let me know

Always thread the machine with the presser foot up. This keeps the tension disks open while you are threading. Open the lid on top. Put thread on spool holder. Go directly to your left and down the path on the farthest left. Go all the way to the bottom and bring the thread up on the path closer to the spool. Hook the thread through the metal piece that moves up and down while sewing. It should be in the highest position when threading. Run the thread down and clip into the small metal holder above the needle. Pull down needle threader, draw thread across front of it from left to right and pull through needle.