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Adjustment Procedures Results of Improper Adjustment
1) Assembling the needle feed adjusting link
1 Fix fulcrum shaft 2 on the handwheel side with setscrew 3
at the position where the clearance provided between the
end plane on the handwheel side of needle feed adjusting
link 1 and the machine frame is 2 mm.
2 Make fulcrum shaft 4 on the face plate side come in contact
with needle feed adjusting link 1 and fix fulcrum shaft 4 on
the face plate side with setscrew 5 so that needle feed
adjusting link 1 smoothly moves without play.
(Caution) Perform with L-type wrench or the like for gathering
the play at fulcrum shaft 4 on the face plate side
2) Assembling the adjusting link plate installing base
1 Fix adjusting link plate installing base 6 with two setscrews
9 at the position where adjusting link plate 7 is located almost
in the center (center between the needle feed adjusting link
and E ring) of pin 8 of needle feed adjusting link 1.
3) Assembling the needle feed cam
1 Tighten needle feed cam !0 so that screw No. 2 of needle
feed cam !0 is in the center of the setscrews in main shaft
thrust collar !1.
(Caution) Be careful of the lateral position of the needle feed
cam !0 so that needle feed rod !2 is not pinched.
4) Adjusting zero position of the needle feed dial
1 Set the needle bar to its lower dead point.
2 Tighten needle feed dial !4 until the angle of four pieces of
connecting links B !3 and connecting links A !9 is even.
3 Tighten adjusting link plate stopper screw !5 until the top end
comes in contact with adjusting link plate 7, and fix the screw
with lock nut !6.
4 In this state, loosen setscrew !7, adjust the scale “0” on needle
feed dial !4 to engraved marker dot !8 on the machine arm,
and tighten setscrew !7.
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