I need to adjust the feed dog higher. There is a threaded plastic stud with a metal keeper nut surrounding it. There are 2 allen wrench studs attaching the feed dog. Which one adjusts it higher?

When you sew the machine must be set at the correct settings. If your machine won't straight stitch, turn it off at the power point and then turn it back on. Most machines reset to the default straight stitch setting. Secondly when you sew the presser foot must be down. This engages the "feed dogs" or the triangular looking "teeth" below the presser foot. As you sew, the feed dogs grab the two layers of fabric pulling them through, the thread above (spool) and the thread below (bobbin) meet to form the stitch. Finally, maybe fiddling around with dials and settings you may have dropped, or disengaged the feed dogs. Check with your manual on how to re-engage the feed dogs. Hope this helps and happy sewing. Remember, when all else fails..... read the manual.

The feed dogs in all Classic Bernina machines from the 130-180\'s will eventually come out of adjustment. This is due to the so-called cost savings modern manufacturing method of drilling holes in the machine frame parts and using thread forming screws instead of tapping or cutting cylindrical threads and the use of standard fasteners.

Regarding the screw fastener itself having a cylindrical screw form, the Bernina Classic machines used thread forming screws. Not necessarily a bad thing but in this case a dumb idea. Because these screws are not exactly cylindrical, they will not hold tight over time, hence loosening of the feed dog\'s height adjustment. You will need a T-10 Torx screw driver to make the adjustment.

Proceed by opening the bobbin cover door. You will find a rectangular opening to your upper right and will be able to see the screw head of the feed dog adjustment. With the feed dog in the upper most raised position, loosen the screw and lift the feed dog. Tighten the screw.

Check the height of the feed dog by rotating the hand-wheel in the direction of motion until the needle eye is flush with the needle plate. The feed dog teeth will also be flush in the normal position. If too high or too low, readjust to this height and, voila\'..... SewTechnical Home

the best thing to do is have the feed dog check to see if it needs a adjustment or if it needs to be replaced

then your feed dog button is either come loose or is broken, it needs to be
serviced

I had this same problem with a Babyloc machine. The two hex set screws that hold the feed dog assembly to the drive shaft may have worked loose. You can confirm this by turning the machine by hand and observing the movement of the feed dogs. Tighten the hex screws using the correct size Allen key. You will most certainly need to adjust machine's timing. When working properly the feed dogs should rotate front to back in an elliptical pattern, remaining down during the down cycle of the needles. If the set screws have worked loose you may also have a problem with the stitch length adjustment cam (located on the left side of the machine.) This problem will manifest in a machine that is locked up or slows down during use. When dry the cam will heat up, expand and seize within its bearing sleeve. To fix this problem you will need to remove the small plastic cap (with red arrow) covering the screw securing the cam. It is usually also necessary to remove the connecting rod/sleeve that the cam rides in. Once both of these parts have been removed, you will need to carefully separate them and resurface the inside of the sleeve. This can be done with a very fine (500grit or higher) emery paper. Once the cam fits inside the sleeve without binding, reassemble using sewing machine oil or lithium grease and adjust feed dog timing.

I have a 7000 manual and from memory the 7000 was released a year after the 5000 and very similar. Look at top middle image below, for feed dog release at back of the sewing free arm.
At the back of the sewing free arm (remove the accessories tray) is a slide to lower the feed dogs, there is a little stub that you need to push to release it. Manual says "Drop the feed by pushing the slide (a), which is at the rear of the elevated sewing surface, to the left. To raise the feed dog again, press down the stud (b) and the feed dog will rise when you start sewing." You might need to wind the flywheel towards you half a turn to visually check they have come up.

Hello,

A feed system for a sewing machine having a frame, a horizontal arm shaft journalled in said frame, a vertical arm shaft extending downwardly from adjacent said horizontal arm shaft, means rotatably connecting said horizontal arm shaft to said vertical arm shaft, said feed system comprising a cam fixed to said horizontal arm shaft, a sheet metal feed fork having parallel bent over portions at one end thereof embracing said cam and in driving engagement therewith, a feed rock shaft supported in said frame and having an arm connected to the other end of said feed fork, feed regulating means carried by said frame and connected to said feed fork for converting motion induced by said feed cam to oscillations of said rock shaft, said rock shaft being formed with a pair of upright rock arms on the other end thereof, a horizontally disposed U-shaped sheet metal feed dog carrier having each end thereof connected to one of said upright rock arms, said feed dog carrier having a horizontal shelf extending from the base of the U between the ends thereof, said shelf supporting thereon a feed dog, means for attaching said feed dog to said shelf, a stud affixed to said base of said feed dog carrier beneath said shelf, a sheet metal lift lever pivotally supported on a horizontal axis in said frame substantially parallel to said rock shaft, said lift lever having a slotted end for engagement with said stud extending from said feed dog carrier, said lift lever having the other end thereof supporting a cam follower adjacent said vertical cam shaft, and a lift cam removably affixed to said vertical cam shaft and in engagement with said cam follower on said lift lever.

Take care.

the forward reverse lever is in the middle ( neutral)
the needle thread tension needs adjusting tighter

hi! there if your feed dog does not move the fabric forward or backward,if this is so try to run machine w/o the fabric check if feed dog move on cycle,the teeth should be moving upward and downward rotation pushing action on your fabric,the teeth should come out to the plate slot of feed dog.if not adjust upward, and adjust also the presser foot of needle.if your feed dog is not moving when machine running,thre is a mechanical disengage or loosen in shuttle assymble and feeder dog mechanism they link together ubder the machine,as the shuttle move on one stroke the feeder also move also with the needle.Chesk the adjustment and link mechanism.in addition to this try to clean feed dogs by brush chips thread and fabrics sometimes stored on mechanism of feed dogs and shuttle.