JUKI MF-7900 Series Engineer's Manual page 118

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
5. Adjusting the upper knife stroke
❷ ❶
6. Adjusting the engagement angle of the knife
❽
Standard adjustment
❼
❺
❻
D : Standard adjustment angle
E : Angle adjusted for hard-to-sew materials
F : Angle adjusted when the knife has worn
* If the knife engagement angle is adjusted to
F from the start, the knife can wear earlier
than the case where the angle is adjusted the
standard one.
– 104 –
❸
B A
D
E
F
Clockwise
C
❹
Horizontal
position