Question about PfaFF Sewing Machines
If the left needle is closer to you than the right, you probably need a new needle clamp. Remove the needle plate and set the tip of the lower looper behind each needle and check to see if one needle is closer to the looper than the other one. If it is, have an authorized dealer replace the needle clamp. If they say you have to have a new needle bar also, that may well be true since a newer version of the needle clamp requires an updated needle bar.
Posted on Jun 30, 2019
SOURCE: Needle hitting bobbin plate
Is the needle inserted correctly with the flat side at the rear and fully up into the holder ?
If yes, take off the needleplate, remove bobbin case and slowly rotate the handwheel towards you watching the relationship between needle, and the "hook" of the moving "race".
Set on wide zig zag........when the needle is fractionally past it's lowest point, and starting to rise, the hook should be level with the left side of the needle when on the right hand stitch of the zig...the eye of the needle will be below the hook, and ready for thread to be picked up for the stitch to form.
Any other result will mean your timing needs adjusting.
Posted on Feb 10, 2008
SOURCE: Needle hits bobbin outer casing
Your hook/needle timing is off and it needs to be seen by a technician before you damage the hook. Some dealers can do a 24 hour repair for an additional charge.
Posted on Jun 09, 2008
SOURCE: Pfaff serger stuck
your needle bar has been pushed up and is out of adjustment. You need to take off the side cover, there should be a screw on the back of your machine holding it on. Remove this screw, and remove the cover.You may have to remove the light assembly to reach the screw on the needle bar. Once you can see the needle bar, rotate the handwheel until you can see the screw on the needle bar. Loosen this screw SLIGHTLY until you can turn the needle bar. Hold and rotate the needle bar back and forth as you push down slightly. This will lower the bar.Lower it about 1/4 inch. Adjust the needles by turning the bar so that they are straight across. Tighten the needle bar screw so that the bar doesn't move. Turn the handwheel to see if the threads will be picked up. If not, adjust until they are. Tighten the needle bar screw tightly,reinstall the side cover ,and tighten the screw. Change your needles.Rethead and sew.
Posted on Jun 17, 2008
Couple of things I could think of: tension disks need cleaning, there is a site that tells how to clean them, maybe 2 as I recall. Other thing is it is a much older serger, (I have one I am slowly working on to bring up to working level), so it could be that a tension spring internally has lost its tension. It might need a trip to the repair man if that is the case. Another thing is are you using correct needles for the machine? Have you changed them recently? Even new needles can be bad, so if you have to change three times to triple check it can be worth it.
Posted on Sep 09, 2008
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