Needle Threader (Up/Down) - Brother PR655 Service Manual

Adjustment
[Standard]
The clearance between the top end of the hook and the top end of the needle eye is 0.1 to 0.2 mm.
* The top end of the hook and the top end of the needle eye should contact a little.
[Checking]
1. Start the test mode and select [#12: Needle threader] under [MAIN
BOARD TEST MODE].
2. Press [<] or [>] to select the number 1 needle bar. (The needle bar
case unit moves to left or right.)
3. Press [CLOSE] to return to the test mode selection screen and select
[#06: Threader test].
4. Press [Manual move] and move the hook to the front of the needle
eye.
5. Check that the top end of the hook matches up with the top end of
the needle eye. After checking, re-press [Manual move] to return the
hook to its original position.
6. Check that the position of the needle eye and the hook for all needle
bars.
*Key point
• Records smallest needle bar of the clearance between the top
end of the hook and the top end of the needle eye.
Hook
Needle eye
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Needle threader (up/down)

The clearance
between the top
end of the hook
and the top end of
the needle eye
0.1 - 0.2 mm
4 - 27