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BAS-311E.311EL.326E.326EL
Chapter 3. Assembly
11. Thread trimmer mechanism
1. Fit the hole of the thread trimmer connecting rod q over the pin of the connecting rod lever w. Secure the needle plate
e using the screws r and t so that the hole on the needle plate is centered at the needle position.
2. Turn the pulley y until the mark u has slightly passed over the horizontal line.
(Adjust the position of the pulley to the position where the cam gooves on the thread trimmer cam do not fluctuate.)
3. Attach the thread trimming solenoid i using the screw o. At this time, the plunger !0 of the thread trimming solenoid
i must be fully pressed (the same status as when the thread trimming solenoid i is turned on), and a 0.5 mm
clearance must be provided between the thread trimmer driving lever !1 and the driving lever stopper !2.
4. Make sure that the thread trimmer driving lever !1 moves smoothly when the plunger !0 is pressed and released.
5. Tilt the machine head until it stops.
6. Loosen the nut !3, move the connecting rod lever w to the left and right to align the V notch A of the movable knife !4
with the mark on the needle plate e, and tighten the nut !3.
7. Return the machine head to its original position.
r
t
e
q
w
u
y
o
i
!2
!1
o
i
!0
0.5mm
!3
e
!4
A
w
V notch
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