Needle Threader (Checking The Hook Position In Vertical Direction) - Brother BL6200 Service Manual

34. NEEDLE THREADER
(CHECKING THE HOOK POSITION IN VERTICAL DIRECTION)
STANDARD
1. The clearance between the top of hook and the top of needle eye is zero.
2. Threading is capable when needle is located higher than 8.0 mm from the needle plate.
CHECK (Refer to illustration)
Case A
Hook position is too high. (Hook hits needle and can't get through needle eye.)
Case B
Hook position is too low. (Hook gets through needle eye but it catches bottom part of needle.)
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