Removing And Resetting Lower Knife - Yamato VG3511-8F Instruction Manual

7. Trimming mechanism

7.4 Removing and resetting lower knife

Removing the lower knife:
(1) Loosen the screw ② of the collar(left) ① .
(2) Move the upper knife holder ④ to the left and make
the clearance between the upper knife ③ and the lower
knife ⑤ .
(3) Tighten the screw ② slightly.
(4) Loosen the screw ⑥ of the lower knife ⑤ and pull out
the lower knife ⑤ downward.
Resetting the lower knife:
(1) Make the lower knife ⑤ blade even with the top of the
stitch plate. Then, tighten the screw ⑥ securely.
(2) Loosen the screw ② . The upper knife ③ touches the
lower knife ⑤ with its spring.
(3) Rotate the handwheel manually to check the sharpness
of the blades by setting a thread between the upper
knife ③ and the lower knife ⑤ .
(4) Set the top of the lower knife ⑤ 7.0 ㎜ apart from the
upper knife ③ tip (at the base of the blade). Then,
tighten the screw ② securely.
(5) Recheck the knives cut properly.
VG3511-8F
Fig. 7-5
③
④
Fig. 7-6
7.0 ㎜
③
stitch plate
Fig. 7-7
36
①
②
⑤
⑥
⑤