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Procedures of assembling
1. Insert the crank rod , balancer , hand pulley gear A , bobbin winder driver wheel , and the main
shaft counterbalance in the main shaft in this order, and mount the assembly on the frame.
2. Insert the taper screw in the taper hole of the main shaft, and tighten it. Then, tighten the set screw
to fix the main shaft counterbalance .
3. Lightly press the main shaft counterbalance in the direction of the arrow D and also the middle metal
in the direction of the arrow E. Then, tighten the two set screws .
(Tighten the first screw so that it touches flatly on the main shaft . Then, tighten the second one. Same
procedures followed hereafter.)
4. Tighten the two each set screws and , respectively. (Make sure that the first screw touches flatly on
the main shaft .)
5. Push the hand pulley in the direction of the arrow F so that the hand pulley gear A is meshed with that
the hand pulley gear B . In this state, fix the pulley with the two set screws .
6. Mount the main shaft motor and the coupling .
Refer to [(2) Removal of the main shaft motor and coupling].
7. Fix the crank rod with the two set screws . Refer to [(3) Crank connecting rod connection/disconnec-
tion].
8. Fix the balancer with the two set screws ( . Refer to [(4) Crank balancer positioning].
9. Fix the bobbin winder driver wheel with the two set screws . Refer to [(29) Adjustment of the bobbin
winder driving wheel position].
* Try to turn the main shaft and confirm that there is no torque.
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