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10. STANDARD ADJUSTMENTS
10-6. Adjusting the needle bar height
10-7. Adjusting the needle and feed mechanism timing
<-3>
Approx. 1 mm
Needle timing is
（Standard）
advanced
19
Reference line (a), which is the second line from the bottom
2286M
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
lowest position.
2. Remove the oil cap (3).
3. Loosen the screw (4) and then move the needle bar (1) up
or down to adjust its position.
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
2288M
<-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
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
・ To prevent material slippage from occurring, retard the
・ To improve thread tightening, advance the needle
Note: If the vertical cam (3) and horizontal cam (5) are
3. After adjusting, securely tighten the set screws (4) and (6).
Needle timing
is retarded
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S-1110A
<A>. To retard the needle timing, turn in the direction
of <B>.
needle timing. (Fig. [B])
timing. (Fig. [A])
turned too far in the direction of <A>, it may cause
the needle to break.
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