Brother BES-1261BC, Инструкция по эксплуатации

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Chapter 8 Standard Adjustment
BES-961BC
•
BES-1261BC
143
1. Turn the pulley B
q
until the scale of pulley B
q
indicates 180˚ (where the pulley B indication mark
"2" and the stop mark "2" are aligned) and the needle bar is set at the lowest position.
2. Insert the positioning bar
w
into the hole of the pulley B
q
and fix the drive shaft.
Note) Turn the pulley B securely in the clockwise direction.
3. Insert the bottom dead center gauge
e
into the rotary hook
r
.
4. Loosen the screw
y
of the needle bar clamp
t
and the top dead center stopper bolt
o
, then move
the needle bar up and down until the needle tip touches the gauge
e
lightly.
Note) • The needle point should touch the gauge at a place other than the cutting section.
• The bottom dead center gauge should be set in or removed from the rotary hook with its cutting section facing
upward.
5. Tighten the screw
y
of the needle bar clamp
t
securely.
6. After adjustment is finished, remove the positioning bar
w
.
7. Set the needle bar at the highest position (where the pulley B indication mark "1" and the cover
indication mark "1" are aligned). Lightly press the top dead center stopper
u
toward the cushion
rubber
i
, and tighten the top dead center stopper bolt
o
while pressing down the needle bar clamp
so that it faces the front.
Note) • Make sure that the top dead center stopper
u
does not hit the needle bar guide rail !0 at this time.
• When tightening the upper dead point stopper bolt
o
, insert the longer side of the attached wrench into the bolt
and tighten it by using the shorter side.
Excessive tightening may make the needle bar movement sluggish.