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Adjustment Procedures Results of Improper Adjustment
1. Stop position after thread trimming
1) The standard needle stop position is the position where pointer
A on the machine arm aligns with white marker dot B on the
handwheel. (Main shaft timing : 57.5˚)
2) Stop the needle at UP position, and loosen screw 1 to perform
adjustment within the range of the slot.
™ To advance UP stop position a direction of C
™ To retard UP stop position a direction of D
2. DOWN stop position
1) The needle DOWN stop position when the pedal is returned to
the neutral position after the front part of the pedal is depressed
can be adjusted within the range of the slot by loosening screw
2 after making needle 3 stop at DOWN stop position.
™ To advance DOWN stop position a direction of E
™ To retard DOWN stop position a direction of F
(Caution) 1. Do not operate the machine with screws 1
and 2 loosened. In addition, just loosen
the screws, and do not remove them.
2. When the UP stop position is excessively
advanced, the sewing machine stops before
completion of the thread trimming motion,
and there is a possibility of the occurrence
that thread is not trimmed. In addition, when
it is excessively retarded, there is a
possibility that the needle tip projects the
bottom surface of the presser foot or the
sewing machine overruns at the time of UP
stop.
Use the sewing machine at the position
where pointer A on the machine arm aligns
with white marker dot B on the handwheel.
3. Do not move the pointer on the arm since it
has been factory-adjusted according to the
base of the height of the needle bar at the
time of delivery. In case it has been moved,
adjust the needle feed dial to “P = 0”, and
precisely adjust the distance from the top
end of needle bar 4 to the top surface of
throat plate 5 to 44.1 mm when the needle
comes down. In this state, make white
marker dot B on the handwheel align with
pointer A on the machine arm.
4. When the UP stop position is adjusted,
check whether the needle comes in contact
with the wiper.
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