I replaced the bottom knife blade and since then it will not overlock stich. Any suggestion will be appreciated.
Thanks

fizz, March 2013

no brand name and little info? all i can suggest is to make sure the blade is correctly fitted that is the top of blade must be level or just under the needle plate top surface.hope it make sense and that is the problem.only other reason if you did not adjust anything else is that threading is wrong

johan, March 2013