Adjusting The Needle Bar Height; Adjusting The Needle And Feed Mechanism Timing - Brother SL-1110 Instruction Manual

10. STANDARD ADJUSTMENTS

10-6. Adjusting the needle bar height

10-7. Adjusting the needle and feed mechanism timing

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Approx. 1 mm
Needle timing is （Standard）
advanced
19
Reference line (a), which is the second line from the bottom
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of the needle bar (1)(fourth line from the bottom when using a
DA x 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
2. Remove the oil cap (3).
3. Loosen the screw (4) and then move the needle bar (1) up
4. Securely tighten the screw (4).
5. Replace the oil cap (3).
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The illustration at left shows the standard position for the
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<-5>
needle tip when the feed dog (1) is lowered from its highest
position until it is flush with the top of the needle plate (2).
Approx. 3 mm
1. Remove the rear cover.
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2. Loosen the two set screws (4) of the vertical cam (3) and
3. After adjusting, securely tighten the set screws (4) and (6).
Needle timing
is retarded
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SL-1110
lowest position.
or down to adjust its position.
the two set screws (6) of the horizontal cam (5), and then
turn the vertical cam (3) and the horizontal cam (5) slightly
to adjust the timing.
(The vertical cam (3) and horizontal cam (5) are linked by
a pin, so that if either one is turned the other will turn with
it.)
・ To advance the needle timing, turn in the direction of
<A>. To retard the needle timing, turn in the direction
of <B>.
・ To prevent material slippage from occurring, retard the
needle timing. (Fig. [B])
・ To improve thread tightening, advance the needle
timing. (Fig. [A])
Note: If the vertical cam (3) and horizontal cam (5) are
turned too far in the direction of <A>, it may cause
the needle to break.