Brother LK3-B434E MKII Instruction Manual page 45

10. STANDARD ADJUSTMENTS
10-7-2. Adjusting the engagement of the movable knife and fixed knife
A
Cutting
edge
Cutting
edge
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.
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B C
LK3-B434E Mark II
Fig. 1
D
Movable knife
Fix knife
Cutting
edge
Cutting
edge