Needle Threader (Exchange); (Checking The Hook In Standard Position) - Brother PE-300S Service Manual

3. In case that, hook does not go through eyelet of some needles........ Needles through which the hook does
(Example for checking)
When you check five brand-new sewing needles HA130 (#9) on condition that it achieves first case, if the hook
does not go through eyelet of all of these needle, all five needles are defective and you judge the hook position is
not defective.
20.

NEEDLE THREADER (EXCHANGE)

Follow the following procedures when changing needle threader.
1. Remove needle. Lower presser foot.
2. Press needle threader down using index fingers of both hands.
3. Line up D-cut face of new needle threader and needle threader shaft as indicated by (A) in the diagram
below.
4. Attach needle threader guide so that it fits into groove of shaft.
Push up
21 NEEDLE THREADER (CHECKING THE HOOK IN STANDARD POSITION)
vertical direction in relation to eye of the needle
Clearance between top of hook and top of needle eye should be 0mm.
Needle threader can be used when needle point is raised over 10mm above top surface of needle plate.
CHECK (refer to illustration)
Case A
Hook position is too high. (Hook hits needle and cannot go through needle eye.
Case B
Hook position is too low. (Hook goes through needle eye but it catches bottom part of needle eye.)
Needle threader
Take out
Needle
not go through are defective.
D cut
D cut
Top of needle eye
0mm
Top of hook
- 45 -
Guide pin
Guide
Diagram A
(a) (b)
Needle
Hook