JUKI Jtron JTR-KM3680N/WSU Series Instruction Manual page 18

6.1.6) Placing the new fixed knife
B
6.1.7) Placing the moving knife
C
After placing the new fixed knife tighten the "C" screws(3 pieces)
Tighten the "A" screws (2 pieces) to attach the unit in the correct position, the sharp edge of the fixed knife should
be aligned parallel with the puller.
After placing the new fixed knife tighten the "B" screws(2
pieces)
A