I have two overlockers, a very old Riccar, and a Pfaff 4850 Combi (O/L & C/S). They are not in the first flush of youth, the Riccar being about 30 yrs old, the Pfaff considerably younger.
Recently, they have both been mis-behaving, and producing chewed up seams on certain fabrics/thicknesses. Sometimes this was solved by cleaning the lint off before stitching, but sometimes not. Last night, I resorted to flipping the blade back, to stop it making a mess.
I then got to thinking it might be the blades. I haven't changed the blades on the Riccar for years, or on the Pfaff for several years.
Anyone know about changing blades? Not much info about troubleshooting them, and I could find no illustrations of a badly cut seam edge, of the type I'm getting.
Jessie