I would do it if it's out of warranty. Go slow, take photo's of every step, there will be hidden screws that will allow you to dig deeper into the machine. Take photos so you'll know how to put it back together. I recently did this with a Janome serger. It turned out to be quite easy. Not all screws needed a screw driver, some needed allen wrenches. I found a lot dust and dirt, thread and was amazed at how easy it was to put back together.