Needles And Loopers; Height Of Needle - Yamato AZ7000SDR-8 Instruction Manual

6.9 Needles and loopers

Make adjustment by following the steps below:
In case of 2-needle overlock machines and 3-needle safety stitch machines

(1) Height of needle

(2) Installation angle of lower looper
(3) Fix the distance between needle and lower looper, the back and forth position of lower looper temporarily
(4) Parallel of needles
(5) Back and forth position of upper looper
(6) Distance between needle and upper looper
(7) Back and forth position of lower looper
(8) Distance between needle and lower looper
(9) Timing relation between lower looper and upper looper
In case of 1-needle overlock machines and 2-needle safety stitch machines
(1) Height of needle
(2) Back and forth position of upper looper
(3) Distance between needle and upper looper
(4) Installation angle of lower looper
(5) Back and forth position of lower looper
(6) Distance between needle and lower looper
(7) Timing relation between upper looper and lower looper
6.9.1 Height of needle
(1) Loosen the screws ① to remove the logo plate ②.
(Fig. 6-19)
(2) Remove the screw ③.
(3) Rotate the machine pulley to raise the needle bar to
the highest point.
(4) Loosen the screw ④ and adjust the needle bar while
moving it up and down.
When the needle bar is at the highest point, make the
height "N" from the top of the stitch plate to the needle
tip in Table 11.
6.Adjustment of sewing machine
②
Fig. 6-19
29
①
③
④
AZ7000SDR-8, 7500SDR-8