Hello Lisa,
I can attach a list if sites for manuals if you e-mail me, there are a number of Merrit models, when you say thread the bobbin do you mean wind the bobbin or thread the bobbin through the bobbin case, you should have a model number under the stitch length lever, I need to know if it is a drop in bobbin or if you have a seperate bobbin case.
Ken
drivewithken@blueyonder.co.uk, September 2008