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7-4. Attaching / removing the hook
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.
❸
❶
❷
7-5. Adjusting the thread trimmer
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.
❶
❷
❶
❷
When you replace the sewing hook, remove it in the follow-
ing procedures ;
1) Turn the handwheel until the needle reaches to its high-
❹
2) Remove the needle, presser foot, throat plate, feed dog
3) Remove the setscrew ❶ and take out the bobbin case
A
4) Loosen the two screws ❹ and remove the sewing hook
B
Reverse the above procedures when inserting the sewing
hook. At this time, make sure that top end A of the bobbin
case positioning finger is aligned with line B. as shown in
the figure on the left. Never let A protrude from line B.
❸
est position.
and bobbin case from the machine.
positioning finger ❷ .
❸ .
Part No. of hook ❸ is 22525877.
Do not use the hook other than that designated
by JUKI.
(1) Initial position of the moving knife
When the moving knife is in its initial position, the
moving knife pin ❶ should be aligned with the en-
graved marker dot ❷ as shown in the figure on the
left.
1. When the gauge size which is more
than that delivered as standard or the
gauge size of other manufactures is
used, and the counter knife interferes
with the feed dog, loosen nut ❸ ,
move the initial position of moving
knife pin ❶ to the left from engraved
maker dot ❷ by approximately one
half of engraved marker dot ❷ and fix
the pin.
2. Guarantee of the sharpness of the
thread trimmer knife unit is #80 to
#50. When using thick threads thick-
er than these Nos., replace the knife
with thread trimmer knife unit for thick
thread (Part No. : 22556054).
– 111 –
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