You can take the left end cap off and clean the take-up area. You can also take the bottom off of this machine, and oil all of the moving, metal parts. Be aware of any wires/cables, and make sure they don't get unplugged. Don't take anything else off. There's just electronics inside there. There may be spigots on top of the machine to put oil on the upper shaft at both ends. In the bobbin area, there are feed dog linkages that you can oil -- just watch what moves when you turn the handwheel.