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BE-0901E-AC-PC• BE-1201B-AC-PC 10-3
Chapter 10 Adjustment
1. Dismount the pulley cover and turn the pulley [1] 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 [2] into the hole of the pulley [1] 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 [3] and the bolt [7] of the top dead center stopper [5]
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 [4] 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 [3], the hole in the needle bar guide should face the
front.
4. After adjustment is finished, remove the positioning bar [2].
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 [5] toward the cushion
rubber [6], and tighten Socket head bolt for top dead center stopper [7] whilepressing down the
needle bar clamp so that it faces the front.
Note) Make sure that the top dead center stopper does not hit the needle bar guide rail [8] at this time.