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5. Installation procedure of LU-ST KIT
5.1 Exchange of thread trimmer cam.
(1) Lean the sewing machine backwards.
(2) Loosen the screw of bush (R01).
(3) Loosen the screw of bush (R02).
(4) Loosen the screw of feed cam (R03).
(5) Loosen the screw of bush (R04).
(6) Loosen the screw of the large gear (R05).
(7) Loosen the screw of eccentric cam (R06).
(Lift the sewing machine and loosen the screw from the back side.)
(8) Loosen the screw of bush (R07).
(9) Loosen the screw of spring holder (R08). And then detach the coil (R09) spring and
pin (R10), and move the lower shaft right to the place where thread trimmer cam (D01)
remove with bush (R04) and thread release cam (R11).
(Remove the eccentric cam (R06) and the large gear (R05).)
(10) Remove the thread trimmer cam (D01) with bush (R04) and thread release cam (R11).
At that time, if the installation angle of the cam and bush is recorded, re-assembly work
become easy.
(11) Loosen the screw of thread release cam (R11), and then remove the thread release cam (R11)
with bush (R04) and thread trimmer cam (D01). Exchange the thread trimmer cam (D01) for
the kit one (105). In thread trimmer cam (105) of the kit has mark "2" to the side.
Install bush (R04) in the direction of the figure below. Afterwards, install thread release cam (R11).
(12) Pass assembled the bush assembly (R04, 105, R11) through the lower shaft.
(13) Move the lower shaft left slowly.
(14) Fix the large gear (R05). (Install it in the direction of the figure below.)
(15) Fix the eccentric cam (R06).（Tighten the screw in the groove of the shaft at the right of
the feed bar connecting fork beforehand.）
(16) Move the lower shaft left and return it to former position.
(17) Put the first screw in the set of lower shaft, and then tighten all of the loosened screw.
(Tighten the screw of bush (R07) finally.)
SCREW
R06 R05
R11
D01
R04
R03
- 4 -
105
R07
R01
R02
R10
R09
R08
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