Brother BAS-342G - 11-5. Adjusting the driver needle guard; 11-6. Adjusting the needle clearance; 11-7. Adjusting the shuttle race thread guide

6. ASSEMBLY
BAS-342G
57
6-2. Intermittent presser foot lifter mechanism (1)
6-3. Tension release mechanism
1. Tension release ba
r
2. Retaining ring E
3. Plain washer
4. Compression spring
5. Tension release solenoid
6. Solenoid setting plate
7. Solenoid cushion
8. Plain washer
9. Nut
10. Bolt
11. Plain washers [2 pcs]
12. Spring washers [2 pcs]
13. Bolts [2 pcs]
14. Solenoid cover
15. O rings [2 pcs]
16. Shoulder screws [2 pcs]
17. Tension release pin
18. Tension bracket
19. Set screw
5139Q
A
djust the thread take-up
spring height while referring to
“7-2. Standard thread tension”.
A
djust while referring to “7-18.
A
djusting the tension release amount”.
1. Stepping clamp lifter (Insert from the front)
2. Stepping clamp lifter shaft
3. Set screw
4. Flat screw
<Stepping clamp lifter rod adjustment>
Screw the stepping clamp lifte
r
rod in as far as
it will go, then turn it back 3 times.
1271B
1272B
Place the oil tube into
the groove.
Tighten the set screw (3) on the screw stop
w
hile lightly pressing the stepping clamp lifte
r
shaft (2).