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9. STANDARD ADJUSTMENTS
BAS-311F-0, 311F-L, 326F-0
45
(2)
(5)
(4)
(7)
(3)
(1)
(6)
(9)
(10)
0.5 mm
(8)
(9)
Movable
knife waster
A
BC
D
Movable knife
Fix knife
Cutti
ng edge
Fig. 1
Cutting edge
Cutting
edge
Cutting edge
<Replacing the movable and fixed knives>
1. Remove screws (1), and remove feed plate (2). Remove screws (3) and (4), and remove needle plate (5). Now
disconnect the thread cutter connecting rod (6) from stud (7).
2. Remove the movable knife, and replace it with a new
movable knife. Now check the cutting edge of the
movable knife (8) and the fixed knife (9). If necessary,
use the provided movable knife washer to adjust the
knives so that they cut properly.
Adjusting the engagement of the movable knife and fixed knife
A. After the movable knife and fixed knife are properly engaged, tighten the screw as shown in Fig.1.
B. Turn the movable knife (in the direction of the arrow) while the screw is still tightened.
C. Loosen the screw.
D. Turn the movable knife (in the direction of the arrow) while the screw is still loosened.
Repeat above steps A, B, C and D four or five times to maintain the cutting performance of the knife.
1245S
1246S
1247S
1248S
3. Install the fixed knife (9) 0.5 mm away from needle hole
plate (10).
0149S
0150Q
0148Q