Brother LH4-B800E Service Manual page 71

3. ASSEMBLY
@6
@4
@7
@8
Tighten the screw @ 2 so that the distance between the needle bar @ 6 and the cutter @ 3 is 0.3 mm.
Tighten the screw @4 so that the top of the cutter blade and the top of the needle plate are aligned when the cutter @3
is pushed down manually to its lowest position.
For a flat cutter @8 , tighten the screw @4 so that it is 1.5 to 2 mm from the top of the needle plate.
3 - 16
@2
@3
0.3 mm
Lowest position
Top of needle plate
Lowest position
Top of needle plate
1.5 - 2 mm
LH4-B800E