Needle Clearance - Brother XM3700 Service Manual

Adjustment
[Standard]
At pattern selection dial [2] (straight stitch) and stitch width dial [5] (left base line), the
clearance between the scarf of the needle and the outer rotary hook point should be 0.15 to
0.3 mm when the rear side of the needle aligns with the outer rotary hook point.
[Adjustment]
1. Remove the needle plate assy, the presser foot and the inner rotary hook assy.
2. Attach the size 90/14 needle.
3. Turn the pattern selection dial until the [2] is the topmost position.
4. Turn the stitch width dial until the [5] is the topmost position.
5. Turn the pulley by hand until the outer rotary hook point aligns with the back side of the needle.
Stitch width dial
6. Insert a screwdriver into the hole of the rear cover, adjust the clearance between the scarf of the needle and the
outer rotary hook point by turning the screw 1.
*Key point
• Loosen the screw
• Tighten the screw
1
1
Rear cover

Needle clearance

Pulley
Pattern
selection dial
. (turn to the direction of "A") → Move the needle to front side. (needle clearance is larger)
1
. (turn to the direction of "B") → Move the needle to rear side. (needle clearance is smaller)
1
Cup screw
M3X20
A
Screwdriver
Back side view
4 - 22
Needle
B
Back (B)
Hook point
1
Back side of needle
and tip coincide
Outer rotary
hook assy
Size 90/14 Needle
Front (A)
0.15 - 0.3 mm
Scarf of needle
Outer rotary
hook assy