Brother BES-116, Инструкция по эксплуатации

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Chapter 8 Adjustment
BES-116AC
127
1. Turn the pulley
q
until the pulley scale indicates 180
°
and the needle bar is set at the lowest
position. (The pulley " " mark and the stop mark " " are aligned.)
2. Insert the positioning bar
w
into the hole in the side of machine head and fix the upper shaft.
Note) Turn the pulley securely in the clockwise direction to eliminate a backlash.
3. Loosen Needle bar guide bracket set screw
e
and the bolt
u
of the top dead center stopper
t
when the needle tip is positioned 10.8 mm above the center of the rotary hook shaft.
Adjust the position of the needle bar thread guide so that the set screw
r
on it is turned to
the right by 25 ~ 30
°
. Tighten Needle bar guide bracket set screw
e
securely.
Note) When tightening the needle bar clamp set screw
e
, the hole in the needle bar guide should face the front.
4. After adjustment is finished, remove the positioning bar
w
.
5. Set the needle bar at the highest position (where the pulley indication mark " " and the
cover indication mark " " are aligned). Lightly press the top dead center stopper
t
toward
the cushion rubber
y
, and tighten Socket head bolt for top dead center stopper
u
while
pressing down the needle bar clamp so that it faces the front.
Note) • Make sure that the top dead center stopper
t
does not hit the needle bar guide rail
i
at this time.
• Remove the positioning bar
w
from the machine head after adjustment is finished.