Needle Guard(Rear) Adjustment; Needle Guard(Front) Adjustment - Yamato VT2500 Instruction Manual

6. Machine adjustment

6.7 Needle guard(rear) adjustment

Needle guard(rear) height
（1） Loose the screw ②.
(2) S e t t h e r i d g e l i n e " a " o f t h e n e e d l e
guard(rear) ① to the same height as the
bottom of the left needle eye when the looper
is at the center of the right needle.
(3) Tighten the screw ②.
Needle guard(rear) front-and-rear position
adjustment
(1) Loosen the screws ② ③.
(2) When the looper tip is at the center of the
right needle, the looper pushes the right
needle, therefore the right needle will be
pushed by the needle guard(rear) ① , and the
clearance between the needle and the looper
will be 0 - 0.05 mm. Also at this time, adjust
the angle and front-and-rear position of the
needle guard(rear) so that the clearance
between the left needle and the needle
guard(rear) ① is 0 - 0.05 mm.
(3) Check that the middle and left needles start
contacting the needle guard(rear) at a point
below the needle eye.
(4) Tighten the screws ② ③.

6.8 Needle guard(front) adjustment

（1） Loosen the screw ⑤ and position the needle
guard(front) ④ so that the clearance between
it and each needle is 0 - 0.3 mm when the
looper tip comes to the center of the left
needle.
(2) Tighten the screw ⑤.
VT2500
069
070
①
0mm - 0.05mm
071
④
072
29
③
②
①
a
0mm - 0.05mm
0mm - 0.3mm
⑤