Hikari H9199, Instruction Manual Book And Parts Book

Page: 67 / 99

INSTRUCTION MANUAL
- 55 -
9-6 Adjusting the needle bar height
Reference line(a), which is the second line from the bottom of
the needle bar(1)(fourth line from the bottom when using a
DA×1 needle) should be aligned with the lower edge of the
needle bar bush D (2) as shown in the illustration when the
needle bar(1) is at its lowest position.
1) Turn the machine pulley to set the needle bar(1) to its
lowest position.
2) Remove the oil cap(3).
3) Loosen the screw(4) and then move the needle bar(1) up
or down to adjust its position.
4).Securely tighten the screw(4).
5) Replace the oil cap(3).
9-7 Adjusting the needle and feed mechanism timing
The standard position for point of the needle is as described
below when the feed dog(1) is lowered from its highest
position until it is aligned 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)(“ ○ ”mark) on the vertical
cam(3).)
<F·M>
The top of the feed dog(1) and the top of the needle plate(2)
should be aligned, and the point of the needle should be
approximately 1mm below the needle plate(2).
<H>
The top of the feed dog(1) and the top of the needle plate(2)
should be aligned, and there should be a clearance of
approximately 3mm between the point of the needle and the
needle plate(2).
1) Tilt back the machine head.
2) Loosen the two set screws(5),and then turn the vertical
cam(3) slightly to adjust the timing.(Use the “-”mark on the
lower shaft and the alignment position on the scale(4) of the
vertical cam(3) as a guide.)
· To set to the standard position, align the “-”mark on the
lower shaft with the“ － ”mark on the vertical cam(3).([A] in
the illustration)
· To prevent material slippage from occurring, retard the
needle timing.(Turn the vertical cam(3) in the direction of
(B).Refer to [B] in the illustration.)
· To improve thread tightening, advance the needle
timing.(Turn the vertical cam(3) in the direction of (C). Refer
to [C] in the illustration.)
NOTE
：
Do not turn the vertical cam(3) too far in the
direction of (C), otherwise it could cause the needle to break.
3) After adjustment is completed, securely tighten the two
screws(5).