Adjusting The Thread Trimming Solenoid Position; Adjusting The Backlash - Brother LK3-B430E Mark II Service Manual

6. ADJUSTMENT

6-12. Adjusting the thread trimming solenoid position

w
q
1. Remove the screws q and the top cover w.
2. Fully press the plunger r of the thread trimming solenoid e, adjust the clearance between the thread
trimmer driving lever t and the driving lever stopper y to 0.5 mm, and tighten the screw u.

6-13. Adjusting the backlash

r
1. Loosen the set screw q, and turn the rock gear shaft w to adjust the play at the end of the driver e to 0.05
- 0.12 mm
2. After adjustment, move the rock gear shaft w to the left and right so that the pulley can rotate easily, and
tighten the set screw q.
47
w
q
LK3-B430E Mark II
0.5 mm
y
u
t
0.05 - 0.12 mm
r
e
e