Needle Bar Height - Brother PR655 Service Manual

Adjustment
[Standard]
The gap between the top of needle eye and the outer rotary hook point in the up/down direction should be 1.8 to 2.2
mm when the right edge of the needle matches up with the outer rotary hook point.
The thread guide of the needle bar should be facing directly frontward.
[Adjustment]
1. Start the test mode and select [#11: Needle spacing] under [MAIN
BOARD TEST MODE].
2. Press the [Spacing position] and the standard needle bar for adjustment
will be selected automatically. The needle bar case unit will move to
the left and right.
3. Remove the 2 screws of the needle plate to remove the needle plate.
4. Remove the screw 1 and screw 2 of the rotary hook stopper to
remove the rotary hook stopper.
1
2
5. Turn the inner rotary by hand until it reaches a position (A) such that the right edge of the needle and the outer
rotary hook point look like they match up with each other.
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Needle bar height

Bolt, Socket
M3X6
Screw
2
Rotary hook stopper
1
with hex wrench 2.5 mm
Needle
Outer rotary hook point
"A"
Outer rotary
4 - 22
Inner rotary