Standard Adjustments; Adjusting The Needle Bar Height; Adjusting The Needle Bar Lift Amount - Brother KE-434C Instruction Manual

10. STANDARD ADJUSTMENTS

10. STANDARD ADJUSTMENTS
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

10-1. Adjusting the needle bar height

2552Q
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).
* If using a DP 5 needle, use the highest reference line (reference line a).

10-2. Adjusting the needle bar lift amount

2554Q
Turn the machine pulley to raise the needle bar from the lowest position until the lowest reference line on the needle
(reference line B) is aligned with the lower edge of the needle bar bush (1). Then loosen the screw (2) and move the driver (3)
to adjust so that the tip of the rotary hook is aligned with the needle center line.
* If using a DP 5 needle, use the second reference line from the top of the needle (reference line b).
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CAUTION
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.
If the power switch and air need to be left on when
carrying out some adjustment, be extremely careful
to observe all safety precautions.
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.
KE-434C,435C
2553Q
2464Q