Brother BAS-342G - Upper thread is not trimmed; Poor stitch finish on underside of material; Incorrect tightening of the thread; Sewing machine does not operate when the power is turned on and the foot switch is depressed

To Next Page

To Previous Page

6. ASSEMBLY

BAS-342G

6-7. Upper shaft mechanism

(Continued on the next page.)

1. Upper shaft

2. Pulley gear R

3. Driving wheel B-winder

4. Stepping clamp cam

assembly

5. Thread take-up crank

6. Screw

7. Set screw

8. Set screws [2 pcs]

9. Set screws [2 pcs]

10. Rubber cap

11. Set screws [2 pcs]

12. Joint assembly

13. Set screws [2 pcs]

1305B

pply adhesive <Threebond 1324> to the

outer circumference of the joint assembly

bearing.

1） Tighten the screw of the thread take-up crank (5)

so that it is aligned with the upper shaft hole.

2） While pressing the thread take-up crank (5) so

that there is no play in it, tighten the two set

screws (8).

pply adhesive <Threebond 1401> to the thread

section of the screw.

5204Q

Reference line

Before inserting the upper shaft (1), apply

the grease <SA8837-001> specified by

Brother to the places indicated by .

Install the driving wheel B-winder so

that it is in phase with the thread

take-up crank and aligned with the

reference line on the upper shaft.

Other manuals for Brother BAS-342G