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12. Marker dots on the handwheel
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.
13. 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
❹
❷ (White)
❸ (Red)
❶
❷
❸
❺
– 22 –
The upper stop position of the needle bar is obtained
by aligning marker dot ❶ on the cover with white
marker dot ❷ on the handwheel.
The standard timing of the thread trimming cam is
obtained at the position where marker dot ❶ on the
cover is aligned with red marker dot ❸ on the hand-
wheel.
(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 en-
graved 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).
If the initial position of the moving knife is not
correct
Loosen the nut ❸ , and move the moving knife to the
right or left until the pin ❶ meets the marker dot ❷ .
Then, tighten the nut ❸ .
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