Checking The Thread Paths (2) - ELNA 9900 Service Manual

Upper side
Lower side

Checking the Thread Paths (2)

Presser foot
Hook
Thread keeper
Check spring
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.
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elna 9900