Originally Posted by
Watson
Are you sure all the oiling points are well-oiled? This can make a machine run loud if they are dry.
Watson
This is exactly what I was thinking. If it's a new machine, it's entirely possible it's been sitting on the shelf long enough to need a dab. Check your manual first to see if it is the kind that needs oil (some say not to oil because they're self-oiling and sealed).
I'm pretty good about oiling my machine, but I realized last night that I couldn't remember the last time I'd oiled it. Gave it a few drops and was so astonished at how much quieter it was, I had to keep checking to make sure it hadn't come unthreaded.