Feed Distance - Brother XM3700 Service Manual

Adjustment
[Standard]
At pattern selection dial [2] (straight stitch), stitch width dial [5] (left base line) and stitch
length dial [0] (feed : 0), the feed length should be 1 mm or less when sewing at 10 pitches.
At pattern selection dial [2] (straight stitch), stitch width dial [5] (left base line) and stitch
length dial [4] (feed : maximum), the feed length should be more than 36 mm when sewing at
10 pitches.
[Adjustment]
1. Turn off the power, and then remove the foot controller.
2. Remove the face plate and the pattern selection dial, and remove the front cover and the rear cover.
3. Attach the size 90/14 needle.
4. Attach the pattern selection dial.
5. Turn the pattern selection dial until the [2] is the topmost
position.
6. Turn the stitch width dial until the [5] is the topmost
position.
7. Turn the stitch length dial until the [0] is the topmost
position.
8. Lay a paper on the needle plate, and lower the presser
foot lifter to lower the presser foot.
9. Turn the pulley by hand to the direction of the arrow, and
drop 11 stitches on a paper.
10. Loosen the screw 1 of the feed dial gear.
1
11. Adjust the feed length by turning the feed dial gear left
and right.
*Key point
• At stitch length dial [0] (feed : 0), the feed length
should be 1 mm or less when sewing at 10 pitches.
*Key point
• When feeding a paper to the rear side. (frontward
sewing)
→ Feed length is smaller (Fig. 1 "a"), when the feed dial gear is turned counterclockwise (direction "a").
• When feeding a paper to the front side. (reverse sewing)
→ Feed length is smaller (Fig. 1 "b"), when the feed dial gear is turned clockwise (direction "b").
Feed dial gear
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Feed distance

Set Screw, Socket (CP)
M4X4
NG
1
START
11th stitch
NG
11th stitch
START
Back side view
4 - 30
Stitch width dial
Needle
Rear side
10 pitches:
more than 1 mm
Front side
Rear side
10 pitches:
more than 1 mm
Front side
Fig. 1
Stitch length dial
Pulley
Pattern
selection dial
Presser foot lifter
Presser foot
Paper
OK
Rear side
10 pitches:
1 mm or less
START
Front side