8. ADJUSTMENT
BAS-311H
96
<Stepping clamp connecting rod position adjustment>
3138B
3380B
3379B 3381B
1. Loosen the screw (1), and then open the cover (2).
2. Loosen the nut (3), and then adjust the position of the stepping clamp connecting rod (4).
･ When the stepping clamp connecting rod (4) is raised, the intermittent stroke will increase.
･ When the stepping clamp connecting rod (4) is lowered, the intermittent stroke will decrease.
Next, adjust the needle bar and presser foot timing.
3. Turn the pulley (5) in the direction of the arrow to raise the needle bar from the lowest position until the lowest reference
line on the needle bar (reference line B) is aligned with the lower edge of the needle bar bush (6).
(If using a DP x 5 needle, align with the second reference line from the top (reference line b).)
4. Open the top cover and loosen the two set screws (7).
5. Align the index marks on the stepping clamp cam (8) and the stepping clamp connecting rod (4), and then tighten the two
set screws (7).
Index mark
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