Inspect the presser foot, debur and align as necessary. Test sew on the serger using all threads. Do final sew off, test on a variety of fabrics, stretch and woven. Make sure all parts and accessories are returned with machine. Sewing machines and sergers that have been serviced by us carry a 90 day warranty.
Minimum repairs have no warranty.
We are seeing more of a problem where the lint has been blown into the machine instead of out of it. Lint can get in gears and other mechanisms causing premature wear and failure. I recommend you use a mini Vac attachment for your vacuum to suck the lint out of your machine. Oil Every machine needs lubrication of some sort. There is no such thing as a non-oiler or machine that doesn't need service or lubrication.