−7 −
1) Timing relation between the needle and the feed
First screw A in operating direction on double eccentric 1 of feed drive assembly must be straight
up, when the needle bar is at bottom of stroke.
2) Adjusting the timing relation between the needle bar and looper (synchronization) : Without
gauges
When the blade point of the looper moves to the left in the rear of the needle and to the right in front
of the needle, align the upper end of the eyelet of the left needle with the lower face of the looper so
that the distance between A and B, the side of the left needle to the blade point of the looper, should
be equal.
4. STANDARD ADJUSTMENT
(1) MF
A
1
A
1
Left needle
Move to the right
Align
Looper
Looper
Left needle
Move to the left
A
B
Standard Adjustment
A=B
From the library of: Diamond Needle Corp
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