Brother International BAS-375E Instruction Manual - English - Page 40

STANDARD ADJUSTMENTS, 1. Needle and rotary hook timing

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Chapter 7 STANDARD ADJUSTMENTS Chapter 7 STANDARD ADJUSTMENTS CAUTION 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, whicn could result in injury. * When carrying out inspection, adjustment and maintenance. * When replacing consumable parts such as the rotary hook and knife. 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 needs 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. Note See page 10 "Chapter 4 1.Turning the pulley by hand", and turn the pulley manually for all adjustments. 1. Needle and rotary hook timing q w 2.2 ± 0.3mm e Needle center 1. Turn the hand pulley so that the needle bar is 2.2 ± 0.3 mm above the bottom dead center. Loosen set screws w and turn rotary hook e so that the rotary hook point q is aligned with the needle center. 2. After adjustment, securely tighten the screw w. BAS-364E, 366E, 370E, 375E 34

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34
Chapter 7
STANDARD ADJUSTMENTS
BAS-364E, 366E, 370E, 375E
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 needs 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.
Chapter 7 STANDARD ADJUSTMENTS
CAUTION
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, whicn could
result in injury.
*
When carrying out inspection, adjustment and
maintenance.
*
When replacing consumable parts such as the
rotary hook and knife.
Note
See page 10
"Chapter 4 1.Turning the pulley by hand", and turn the pulley manually for all adjustments.
1. Needle and rotary hook timing
1. Turn the hand pulley so that the needle bar is 2.2
±
0.3 mm above the bottom dead center. Loosen set screws
w
and turn rotary hook
e
so that the rotary hook point
q
is aligned with the needle center.
2. After adjustment, securely tighten the screw
w
.
2.2
±
0.3mm
q
e
w
Needle center