32
8-10-2. Replacing movable knife
1. To replace the movable knife①, turn the pulley manually to
place the needle at the highest position.
2. Unscrew two moveable knife fixing screws② and remove
them as shown in Fig. 52.
3. Follow these instructions in reverse order to assemble.
[ Figure 52 ]
8-10-3. Replacing fixed knife
1. To replace the fixed knife①, loosen the hook holder fixing
screw② as in Fig. 53, remove the washer③ and hook holder
④, and then unfasten the fixed knife fixing screw⑤.
2. Follow these instructions in reverse order to assemble.
[ Figure 53 ]
3. If the edge of the fixed knife is worn, make sure to grind the
knife edge with an oil grindstone as shown in Fig. 54.
[ Figure 54 ]
Oil Grindstone
Fixed Knife
①
①
⑤
④
③
②
②
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