21
8) Adjusting the height and pressure of the
presser foot
(1) 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 ④
7mm. Then, tightly fasten the bracket fastening screw
②. (See Figure 31.)
Be careful not to turn the presser bar.
(2) 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. After adjusting, make sure to
tighten the fixing nut ⑤. (See Figure 31.)
9) Adjusting the needle and feed dog timing
After removing the needle, lay down the machine on its back and remove the timing belt ①. Turn the pulley ② to align the
highest position ③ of the pulley’s thread take up lever with the position ④. Then rotate the timing pulley ⑤ to align the bed
base point ⑥ with the timing pulley’s base point ⑦. Hang the timing belt ① in this position. After adjustment, when the
feed dog ⑧ comes down and the needle ⑨ goes up, check whether the needle tip ⑨ matches the needle plate upper side ⑩
at the moment that the feed dog upper side and the needle plate upper side ⑩ match each other. (See Figure 32.)
about 7 mm
[Figure 31]
[Figure 32]
Caution
▶ After disassembling and adjusting a safety device, always place it back to the original position
and check whether it functions as intended.
▶ Use both hands when pushing the machine backward or returning it to the original position.
Due to the weight of the machine, your hand can get stuck in the machine if you should slip.
▶ When adjusting the machine with the switch on, be sure to pay extreme caution.
▶ Only trained engineers must perform troubleshooting or inspection of the machine.
▶ For electrical repair or inspection, consult with qualified technicians or agent.
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