Adjusting The Hook Needle Guard; Adjusting The Bobbin Case Opener - JUKI LS-2342 Instruction Manual

4-6. Adjusting the hook 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.
❶
❷
0.02 to 0.05 mm

4-7. Adjusting the bobbin case opener

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.
❹
❸
❷
B
❺
A
C
❶
When a hook has been replaced, be sure to check the position of the
hook needle guard.
As the standard position of the hook needle guard, hook needle guard ❷
must push the side face of needle ❶ to lean the needle by 0.02 to 0.05
mm away from its straight position.
If not, adjust the hook needle guard by bending it.
1) To bend the hook needle guard inward, apply a screwdriver to the out-
side of the hook needle guard.
2) To bend the hook needle guard outward, apply a screwdriver to the
inside of the hook needle guard.
1) Turn the handwheel in the normal direction of rotation to bring bobbin
case opener ❶ to its backward travel end.
2) Turn inner hook ❷ in the direction of arrow B to allow stopper ❸ to
come in contact with the slits in throat plate ❹ .
3) Loosen bobbin case opener adjusting plate setscrew ❺ . Move bobbin
❻
case opener adjusting plate ❻ in the direction of the arrow to adjust
the clearance between the bobbin case opener and protruding section
A of inner hook to dimension C.
LS-2342S
LS-2342S-7
LS-2342H
LS-2342H-7
C (mm)
0.1 to 0.3
0.2 to 0.4
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