19
7) Adjusting roller presser foot height and
pressure
⑴ Adjusting the height of the presser foot
Loosen the pressure adjustment screw ① and the presser
bar bracket fastening screw ②, and lift the presser bar
lifter ③. Make the distance between the upper side of
the needle plate and the lower side of the presser foot
7mm. Then, tightly fasten the bracket fastening screw
②. Be sure that the presser bar does not move.
⑵ Adjusting the tension of the presser foot
Turning the pressure adjustment screw ① to the right
increases the presser foot tension, and turning it to the
left makes it weaker.
[Figure 29]
8) Rotating roller shaft
⑴ Raise the presser bar lifter.
⑵ Hold the roller presser foot bracket guide ① as in
Figure 30 and move it down and left. Then, there will
be some space to exchange the guage.
⑶ To restart, hold the roller presser foot bracket guide
① and turn it to the right direction.
[Figure 30]
9) Adjusting automatic knee lifter
(optional)
First, loosen the solenoid cover fixing screw ①. If the
joint connecting rod ② is moved clockwise, the
ascending amount of the presser foot grows. It falls
when turned counterclockwise. After the adjustment,
tighten the fixing screw ① tightly.
[Figure 31]
10) Adjusting stitch length
⑴ As in Figure 32, press the stitch length adjusting button
① and turn the pulley ② slowly until you feel that the
button has entered the feed cam groove.
⑵ After the button ① has entered the feed cam groove,
continue turning the pulley ② to align desired stitch
length marked on the pulley ring ③ with the carved sign
④ on the arm tray or the stitch length hole ⑤ on the belt
cover.
⑶ After the desired stitch length is set, take your hands off
the button ①. (The unit of the stitch length is mm.)
[Figure 32]
④
③
①
⑤
②
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