Janome MB-7e - Replacing the Needle; Needle and Thread Reference Table

9
A
Detecting roller
To avoid seam puckering, skipped stitches or thread
breaking, keep the thread paths in the best condition.
1.
Tension control, detecting roller
a) Detecting rollers should spin smoothly.
b) Tension controls and detecting rollers
should be free from lint or dust.
2.
Thread guide hole
a) There should be no burrs or scratches.
3.
Thread take-up lever
a) There should be no burrs or scratches.
4.
Lower guide plate
a) There should be no burrs or scratches.
5.
Needle
a) Needles should not be bent or blunt.
To check the needle:
Touch the tip of the needle and slide it over on your nail
and slid it lightly.
The needle must be blunt if there is any scratch on your
nail after sliding the needle on your nail.
In that case, replace the needle.
 Placetheatsideoftheneedleontosomethingat
(needle plate, glass, etc.). The gap (A) between the
needleandtheatsurfaceshouldbeconsistent.
Replace the needle if the gap is not consistent.
Checking the Thread Paths (1)