21
D. Position setting of the safety device cam
As shown in Figure 32, align the carved mark on the
safety device cam ② with the carved mark on the
outer part of the trimming cam ①. Firmly tighten
two screws ③.
[ Figure 32 ]
Alignment of carved marks
[ Figure 33 ]
Wrench box
Fixed blade
Oil whetstone
Movable blade
Fixed blade
14)
Tension adjustment of the fixed blade
Loosen the fixed blade tension nut ① with a wrench box
and unfasten the tension screw ②. When the upper tip of
the movable blade moves to align with that of the fixed
blade as shown in Figure 33, adjust the fixed blade
tension screw to ensure the two tips meet without
difficulties. After adjustments, be sure to use the wrench
box from the accessory box to fasten the tension nut ①.
[ Figure 34 ]
15) Replacing the movable blade
Turn the pulley manually to bring the needle up to its
highest position. Take out the needle plate first and
unfasten two fixed blade screws ② to remove the
movable blade ① as shown in Figure 34. When
assembling the replacement parts, follow this instruction
in a reverse sequence.
[ Figure 35 ]
16) Replacing the fixed blade
A. Unfasten the inner spindle stopper fixing screw ②,
take out the washer ③ and the inner spindle
stopper ④, and loosen the fixed blade ① screw ⑤
to remove the fixed blade. When assembling the
replacement parts, follow this instruction in a reverse
sequence.
[ Figure 36 ]
B. If the edge of the fixed blade is worn out, be sure to
grind the edge against the oil whetstone.
To Next Page
Loading...
Need help?
General
