Adjustment; Adjusting The Needle Bar Height - Brother KE-430B Service Manual

5. ADJUSTMENT

５. ADJUSTMENT
Maintenance and inspection of the sewing
machine should only be carried out by a
qualified technician.
Ask your Brother dealer or a qualified
electrician to carry out any maintenance and
inspection of the electrical system.
Turn off the power switch and disconnect the
power cord from the wall outlet at the following
times, otherwise the machine may operate if
the foot switch is depressed by mistake, which
could result in injury.
 When carrying out inspection, adjustment
and maintenance
 When replacing consumable parts such as
the rotary hook and knife
Disconnect the air hoses from the air supply
and wait for the needle on the pressure gauge
to drop to "0" before carrying out inspection,
adjustment and repair of any parts which use
the pneumatic equipment.
５-１. Adjusting the needle bar height
3450Q
<When using a DP x 17 needle>
Turn the machine pulley to move the needle bar to the lowest position. Then remove the rubber plug (2), loosen
the set screw (3) and then move the needle bar up or down to adjust so that the second reference line from the
bottom of the needle (reference line A) is aligned with the lower edge of the needle bar bush (1).
<When using a DP x 5 or TQ X1 needle>
Turn the machine pulley to move the needle bar to the lowest position. Then remove the rubber plug (2), loosen
the set screw (3) and then move the needle bar up or down to adjust so that the highest reference line (reference
line a) is aligned with the lower edge of the needle bar bush (1).
99
CAUTION
If the power switch and air need to be left on
when carrying out some adjustment, be
extremely
precautions.
Hold the machine head with both hands when
tilting it back or returning it to its original
position. Furthermore, after tilting back the
machine head, do not push the face plate side
or the pulley side from above, as this could
cause the machine head to topple over, which
may result in personal injury or damage to the
machine.
Use only the proper replacement parts as
specified by Brother.
If any safety devices have been removed, be
absolutely sure to re-install them to their
original positions and check that they operate
correctly before using the machine.
Any problems in machine operation which
result from unauthorized modifications to the
machine will not be covered by the warranty.
2553Q
KE-430B, 430C series
careful to observe all
<KE-435B, 435C>
<KE-436B, 436C>
safety
2721Q