Blackberry

This is a Montgomery Ward Machine that I got for $15. The motor runs really strong but there are some other problems. When I opened up the face plate the small tension pin fell out. I think in order to get this back in the tension assembly will have to be removed but I can't find any instructions on how to do this. I am very familiar with the singer tension assembly but this one is quite different. I threaded the machine and tried to make it sew but of course, I knew it wouldn't. It didn't feed the fabric properly because the pressure foot isn't working properly and it made loops on the underside which is a top tension problem which has to do with that little tension pin not being in place. Also the pressure foot lifter is wobbly and doesn't catch the lever that is supposed to push in the pin when the pressure foot lever is up. I don't know how to fix that either. The stitch pattern mechanism on the top sometimes works very smooth but other times it hangs up. Could someone help me with how to fix this problem. I think it would be a very good machine is I could get these problems fixed.