You said the hand wheel barely moves. Is that all the time? If the hand wheel is hard to turn the motor is getting overloaded and is protecting itself by stopping and giving you the error message. You need to determine why the hand wheel is tight. There could be thread caught or something might need lube. These are non oiling needed machines however sometimes a linkage might need fresh lube.
SOURCE: Timing is off on my Pfaff 2140/2170 machine.
Basically on any sewing machine to time it you will need to separate the two gears that drive the hook. Usually loosen the set screws that attach the gear to the shaft and separate them.
Time the hook first. On center needle position, set the hook so that the point is behind the needle when the needle bar has risen about 2.5mm.
2) Set the needle bar height. Choose the needle position which is the last for the hook to pass.
(Left on most machines, right on older Vikings) At this point, place the point of the hook behind
the needle and set the needle bar height so that top of the eye is just barely below the tip of the
hook.
3) Check feed timing. Set the stitch length to the longest stitch. The needle should enter the
fabric just as the teeth drop below the surface of the plate.
SOURCE: while sewing the bobbin case moves, wheel locks up, needle locks
Im not sure if this will help but thought I would pass it along. My Pfaff 6122 tells me to check bobbin for thread unrolling clockwise before you place it back in the machine. I had mine turned to un roll counter clockwise, this is wrong, the bobbin will fall out when you pull on the thread while you are holding it in your hand. You may just keep putting it in backwards. Hope this works for you. J.R.
SOURCE: needle not picking up bottom thread
Remove the needle plate and the bobbin case.
Ensure that the needle is inserted all the way up into the needle clamp.
Set the machine for straight stitch, center needle position.
Slowly turn the handwheel in the normal sewing direction and observe the following hook timing setting:
When the needle reaches it's lowest point and travels up 3.5mm, the point of the hook should be directly behind the needle, or at least within 1 or 2mm.
Another view is as the hook passes the needle, it should pass the needle slightly above the eye of the needle.
If the timing looks good, use some alcohol on a bit of cloth to clean the hook, careful around the tip of the hook as it is very sharp.
If the hook timing is off, you will need to take it to a knowledgeable service person as there are several possible solutions and several other related adjustments which will need to be made.
SOURCE: Sewing machine is jamming
The UPPER thread is not threaded through the machine correctly.
Testimonial: "That was part of the solution. I also adjusted the bobbin tension, together that solved the problem. thanks for your advice! "
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