Janome MB-7e - Checking the Thread Paths (2)

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6. Needle plate
a) There should be no burrs or scratches.
7. Presser foot
a) There should be no burrs or scratches,
especially inside of the presser foot hole.
b) There should be no warp in the presser
foot.
8. Hook race
a) There should be no burrs or scratches.
b) The tip of hook race should not be blunt.
c) There should be no detectable play in the hook
and hook race.
9. Thread keeper
a) There should be no burrs or scratches,
especially on the tip of the thread keeper.
10. Check spring
a) The check spring should not be worn.
Checking the Thread Paths (2)
Hook
Thread keeper
Upper side
Lower side