Chicago Electric portable band saws are the brand carried by Habor Freight, they are made in China as are several other no name brands ( which are most likely the same tool ). The drive wheels, which are the part that the blade runs on, are made of plastic. These do not stand up to the abuse that the saws are exposed to, especially when the saw binds while cutting. The shaft gear is steel and chews up the inner gear on the drive wheels. An easy fix it to swap the front wheel with the rear wheel. When this is not possible I have a quick fix using JB Weld that seems to be holding up quite well.
Step 1: Remove the rear drive wheel
Step 2: Make a wax mold of wheel
Make sure that you create this wax mold using undamaged teeth.