Adjusting The Needle And Feed Timing; Adjust The Position Of Arm Thread Guide R - Brother S-7220D Instruction Manual

Adjusting the needle and feed
timing
The standard timing is for the tip of the needle to be in
the position given below when the machine pulley is
turned forward to raise the feed dog (1) from its lowest
position until it is flush with the top of the needle plate
(2). (At this time, the "-" mark on the lower shaft will be
aligned with the center of the scale (4) (0 mark) on the
vertical cam (3). ) (Figure [A])
Specifications
-4[]3
-405
1
Turn the stitch length dial to the maximum
setting.
Standard condition
There is a gap of
approximately 2 mm
between the tip of the
needle and the top of the
needle plate (2).
There is a gap of
approximately 4mm
between the tip of the
needle and the top of the
needle plate (2).
2
Tilt back the machine head.
3
Loosen the two set screws (5), and then turn the
feed lifting eccentric cam (3) slightly to adjust the
timing.
CAUTION
Use the standard needle and feed mechanism timing. If
the timing is changed, broken needles may occur.
4
After adjusting, securely tighten the set screw (5).
Adjust the position of arm thread
guide R.
The standard position of arm thread guide R (1) is the
position where the screw (2) is in the center of the
adjustable range for arm thread guide R (1).
1
Loosen the screw (2).
2
To adjust the position, move arm thread guide R
(1).
• When sewing heavy-weight material, move arm
thread guide R (1) to the left. (The thread take-
up amount will become greater. )
• When sewing light-weight material, move arm
thread guide R (1) to the right. (The thread take-
up amount will become less. )
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