Brother International BAS-326F-0 Instruction Manual - English - Page 50

Adjusting the needle clearance, 9-4. Adjusting the driver needle guard

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9-3. Adjusting the needle clearance 0.01 - 0.08 mm 9. STANDARD ADJUSTMENTS (1) (2) 0138Q 1241S Turn the machine pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw (1) and turn the eccentric shaft (2) to adjust so that the clearance between the needle and the rotary hook is 0.01 - 0.08 mm. 9-4. Adjusting the driver needle guard Needle center line Tip (1) (2) (3) 0135Q 1242S 1243S Turn the machine pulley to align the tip of the rotary hook with the needle center line. Then loosen the set screw (2) and turn the eccentric shaft (3) to adjust so that the driver needle guard (1) contacts the needle. If the needle contact pressure is too great, skipped stitches may occur. On the other hand, if the driver needle guard (1) is not touching the needle, the tip of the inner rotary hook will obstruct the needle, resulting in an excessively high amount of friction. 9-5. Adjusting the shuttle race thread guide 3574Q Install the shuttle race thread guide (1) by pushing it in the direction of the arrow so that the needle groove is aligned with the center of the needle plate hole. Note If the shuttle race thread guide is in the wrong position, thread breakages, soiled thread or catching of the thread may occur. BAS-311F-0, 311F-L, 326F-0 43

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9. STANDARD ADJUSTMENTS
BAS-311F-0, 311F-L, 326F-0
43
(2)
(3)
Needle center line
0.01 - 0.08 mm
(1)
(2)
(1)
Tip
9-3.
Adjusting the needle clearance
Turn the machine pulley to align the tip of the rotary hook with the needle center line.
Then loosen the set screw (1) and
turn the eccentric shaft (2) to adjust so that the clearance between the needle and the rotary hook is 0.01 - 0.08 mm.
9-4. Adjusting the driver needle guard
Turn the machine pulley to align the tip of the rotary hook with the needle center line.
Then loosen the set screw (2) and
turn the eccentric shaft (3) to adjust so that the driver needle guard (1) contacts the needle.
If the needle contact
pressure is too great, skipped stitches may occur. On the other hand, if the driver needle guard (1) is not touching the
needle, the tip of the inner rotary hook will obstruct the needle, resulting in an excessively high amount of friction.
9-5. Adjusting the shuttle race thread guide
Install the shuttle race thread guide (1) by pushing it in the direction of the arrow so that the needle groove is aligned with
the center of the needle plate hole.
Note
If the shuttle race thread guide is in the wrong position, thread breakages, soiled thread or catching of the thread may occur.
0138Q
1241S
1242S
0135Q
3574Q
1243S