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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 0.05 to 0.2 mm away
from its straight position.
If the state of the hook is not as shown above, fit
hexagon wrench
❹
into
❸
of needle guard adjusting
screw and adjust as follows:
1) To bend the hook needle guard in direction
a
,
turn the needle guard adjusting screw in direc-
tion
A
.
2) To bend the hook needle guard in direction
b
,
turn the needle guard adjusting screw in direc-
tion
B
.
3) At the nal step of procedure, appropriately ad-
just the clearance provided between the needle
and the hook.
❶
❷
0.05 to
0.2 mm
❹
B
A
❸
a
b
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
4-6. Adjusting the hook needle guard
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