Bernina Artista 730E User Guide - Page 20

Needle/Thread Combination In order to check the needle/thread compatibility, the correct size thread must correspond with the correct size needle. Correct Needle/Thread Combination When sewing, the thread should travel smoothly down the long groove on the front of the needle. The thread can be secured optimally. Too Thin Thread or Too Thick Needle The thread does not travel smoothly in the groove. Faulty stitches and damage of the thread can occur. Too Thick Thread or Too Fine Needle The thread rubs on the edges of the groove and can get jammed. This can break the thread. Needle Summary 130/705 H S 70 BERNINA uses needle system 130/705 H. This system number refers to shank shape as well as to length and form of the needle point. Shank diameter = 0.7 mm (needle size) Needle point e.g. medium ball point Needle scarf Flat shank Shank length Checking the Needle Condition The needle condition should be checked and the needle replaced regularly. A defective needle not only damages the sewing but also the sewing computer. The following are the guidelines: replace needle when starting a new sewing project or as required. • more about this subject see «Trouble Shooting» on page 186 18 The Sewing Computer - Operating Instructions