If it ain't broke ....don't fix it.......I have never taken my machines in for cleaning or service......no telling how much I have saved in 40 years..I have Janomes, New Home, antique Singer......clean with vacuum attachment, oil the wick, change the needle often..oil the shaft. That's it. Why spend the dollars and invite a tech to find something to replace....that is how he keeps a job. When something serious goes wrong.....then get service.