I stopped my machine to refill the bobbin, and when I replaced the bobbin, the needle seemed to be out of alignment. Every time the needle goes down, it hits the bobbin case and breaks. What happened? This machine was just sent off for service and was completely gone through, and this is my first time to use the machine again.
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place the bobbin the winder pull the thread from the spool around tinchoner wrap around bobbin push bobbin against stop turn leaver on wheel to release needle push down on peddle it will auto stop when bobbin is full.
Firstly check that the needle is in the right way, flat shank to the back and all the way up into the housing.
Don't run the machine, just manually turn the flywheel towards to you to check clearance on the needle, if it is still touching the bobbin case, then stop and take it for a service, the timing is out and will need to be reset by a tech.
Many users also had the similar bobbin locking problems. I suggest you to order the following product:
Sewing Machine Repair Guide
It's a professional repair guide written by an expert. Besides PfaFF sewing machine, you can learn how to repair other brands of sewing machine as well. The author claims that you can earn money after you had learned the repair skills!
Check you have the right size bobbin case the gap where the needle enters should be 13mm approx at the widest point. A lot of other pfaff bobbin cases seem to fit and can be easily be mistaken. I have two pfaffs and have accidentally mixed the cases and had a similar problem.
The shuttle/race/bobbin system shouldn't really be taken apart by the average user. Unfortunately, your chances of ever getting it back together properly so the machine will sew (this is the timing of the machine) are very slim. You'll need to take it to a sewing machine technician. I would recommend an authorized Pfaff tech as they'll be sure to have the proper tools to do this correctly - won't be inexpensive but will be worth it. Most "neighborhood sewing machine repair folks" don't have experience on computer machines. Resetting timing on a computer machine isn't the same as the old mechanicals and requires some expertise.
I suggest you to order the following product:
Sewing Machine Repair Guide
It's a professional repair guide written by an expert. Besides PfaFF sewing machine, you can learn how to repair other brands of sewing machine as well. The author claims that you can earn money after you had learn the repair skills!