Reduce Wear And Tear
A sewing machine comprises many moving parts, and these parts need proper lubrication and oil to run efficiently. However, with time, the oils lubricating these parts dry out.
The lack of proper lubrication will cause friction between the moving components which will lead to wear and tear. The dust and dirt that accumulates inside the machine in time will also cause issues. They will prevent the cogs and gears of the machine from moving as intended, which can lead to problems such as uneven stitches.
You can indeed clean and lubricate the sewing machine to some extent. But it won’t be that easy when you are dealing with the inner chassis of the machine which is best left for trained professionals. A minor mishap like cleaning liquid seeping into an unwanted partition will fry your sewing machine.