Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Workhorse

I've had my 5040 since I received it as a Christmas gift in the early 1990's. It's nearly 2009 and I am still using my machine. It's very reliable and easy to use.The only issue I ever have, which I assume to be user error, is with the bobbin. Sometimes the tension isn't right and the stitches end up all loose (a previous reviewer mentioned the underside being all "loopy") I find keeping the tension an stitch length at 3 most of the time prevents this. If it does happen, rethread it and that often solves the problem.