1) Using the wrong lubricant. Hohner and Muller heads, for instance,
use a one-way bearing in their wire-advance system. Operators often
use the wrong grease which at higher speeds results in varying leg
lengths in the stitch. This leads to a frustrating troubleshooting
expedition where the operator is trying to ‘fix’ a head that simply
requires the correct grease.
Also, stitcher manufacturers usually recommend light machine oil and
not the automotive oil which is often used. Be sure to use precisely
what is recommended.
2) Using the wrong amount of lubricant.
Author:”By Andre Palko”