Imperfect Cutter Function (Imperfect Material Cutting) - Brother HE-800A User Manual

Cause
Needle plate Needle plate position
Burr on the screw hole
edge (in event of uneven
material feeding)
Upper thread Needle
trimmer assembly thread trimmer
Cutter Clearance
needle bar and cutter
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. Imperfect cutter function (imperfect material cutting)

Cause
Cutter Installation
cutter
Cutter blade
Damage
mechanism parts
Loose screws
Cutter solenoid Check for a disconnected
cord.
Cutter power Memory switches
Check
Adjust the forward/back position of the needle plate
so that the needle is in the center of the needle
hole.
Polish with buff.
strikes upper Refer to "16-16. Needle strikes upper thread
trimmer".
between Install the cutter so that the clearance between the
needle bar and the cutter is 0.3 mm.
* The cutter release section of the needle bar
should be at a right angle to the cutter.
Check
position of Install the cutter so that its edge is aligned with the
top of the needle plate.
If blade is worn or chipped, sharpen it or replace it.
Replace with the special needle plate (optional).
to cutter
Replace any parts that are damaged.
Tighten any loose screws.
Connect the cords.
If the material is heavy and difficult to cut, use
memory switch No. 00 to increase the cutting force
of the cutter.
HE-800A
16. TROUBLESHOOTING
Remedy
Bisect
Check the chamfered side
finishing
(Needle plate cross section)
0.3 mm
Remedy
Page
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4014Q
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4015Q
102, 103
74
4016Q
Page
74
4
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79
104