Troubleshooting tips to follow when your Euro Pro electronic sewing machine's bobbin thread keeps breaking
A dirty shuttle race, improper thread routing or incorrect thread tension can break the bobbin thread.
Unplug the sewing machine and check thread routing according to guidelines in your owner's manual. Reroute the thread correctly if necessary.
Also, check thread tension settings because incorrect thread tension can break the bobbin thread. Set thread tension according to the guidelines in your owner's manual.
Clean the shuttle race because lint and debris buildup can bind up the bobbin and break the bobbin thread.
Troubleshooting your Euro Pro electronic sewing machine when its needle won't move
A disengaged clutch, broken drive belt or internal drive gear failure can prevent the needle from moving.
Engage the hand wheel clutch if you have it disengaged for bobbin winding. If the needle won't move with the clutch engaged, unplug the sewing machine and check the drive belt. Replace the drive belt if it's broken.
If the drive belt is okay, an internal drive gear failure is likely preventing the needle from moving. You'll typically need to have a service technician examine the sewing machine and fix a drive gear failure.