Adjusting The Spreader Thread Guide And The Needle Clamp Thread Guide; Adjusting The Front Needle Guard - JUKI MF-7523 Instruction Manual

13. Adjusting the spreader thread guide and the needle clamp thread guide

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-
ing work after turning the power off and ascertaining that the motor is at rest.
❸
❺
❹
A
❶
❷
❺
❹
0.8 - 1.2 mm
0.4 - 1.0 mm
❷

14. Adjusting the front needle guard

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-
ing work after turning the power off and ascertaining that the motor is at rest.
❷
B
C
❶
❶
❸
❷
‒ 21 ‒ – 21 – – 21 –
[Spreader thread guide]
Adjust so that the clearance between spreader thread
guide ❷ and spreader ❶ is 0.4 to 1.0 mm. Then fix the
spreader thread guide with setscrews ❸ .
* Adjust so that the center of slot A of thread guide ❷
aligns with blade point B of spreader when spreader
❶ is in the extreme right position. In addition, allow the
spreader thread guide to come near the needle clamp
to such an extent that the spreader thread guide does
not interfere with the needle clamp.
[Needle clamp thread guide]
Adjust so that the center of thread hole of needle clamp
thread guide ❹ aligns with center C of slot A when the
needle is in the lowest position.
* At this time, adjust so that the clearance between nee-
dle clamp thread guide ❹ and spreader thread guide
❷ is 0.8 to 1.2 mm. Then fix the needle clamp thread
guide with setscrew ❺ .
Adjust so that the clearance between the needles and
front needle guard ❷ is 0.1 to 0.3 mm when looper ❶
travels from the extreme right position to the left and pass-
es the rear side of the respective needles. Then fix the
front needle guard with setscrew ❸ .
* Allow front needle guard ❷ to come to the needle as
near as possible within the range where needle thread
smoothly passes in accordance with the kind or thick-
ness of thread.