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35
Replacing the Knife
Disassembly
1.
Unplug the unit.
2.
Open the front door.
3.
Remove the needle guard (see page 29).
4.
Remove the tighten screws on the right and left needle blocks, then push the knife
lever so as to remove the right and left needle blocks.
5.
Remove the spring cover on the bottom of the knife spring and take out the washer
and spring.
6.
Remove the knife.
Assembly
1.
Orient the knife with the flat side facing up.
2.
Position the square hole in the knife over the square projection that drives the
knife.
3.
Position the knife spring over the square projection of knife lever.
4.
Mount the spring cover and tighten it.
5.
Check that the knife moves back and forth easily and is seated squarely in the
needle holder block.
6.
Make sure the needle holder is seated squarely in the needle holder block.
7.
Mount the right and left needle blocks.
8.
Double check to make sure the knife moves in and out freely.
Right needle block
Left needle block
Spring cover
Hold Knife Spring
Knife
Knife block
Knife lever
Summary of Contents for ST9500
Page 17: ...17 5 Panel Operation Flow Chart...
Page 58: ...58 Whole Machine Exploded Illustration...
Page 60: ...60 Base Assembly and Body Assembly Exploded Illustration...
Page 62: ...62 Motor Assembly Exploded Illustration...
Page 65: ...65 Head Subassembly and Knife Lever Assembly Exploded Illustration...
Page 67: ...67 Base Knife Assembly Exploded Illustration...
Page 69: ...69 Left and Right Needle Holder Assembly Exploded Illustration...
Page 71: ...71 Guide Bar Assy Feed Assy and Feed Lever Assy Exploded Illustration...
Page 74: ...74 Switch Power Supply Assy and Driver Assy Exploded Illustration...