Straight Forward/Straight Reverse Stitch Length - Brother XM3700 Service Manual

Adjustment
[Standard]
At pattern selection dial [2] (straight stitch), stitch width dial [2.5] (center base line) and stitch
length dial [2] (feed length : 2 mm), the difference between the forward stitch length (10
pitches) and the reverse stitch length (10 pitches) should be within ±4 mm.
[Adjustment]
1. Remove the face plate, the pattern selection dial and the front cover.
2. Attach the size 90/14 needle.
3. Attach the pattern selection dial.
4. Turn the pattern selection dial until the [2] is the
topmost position.
5. Turn the stitch width dial until the [2.5] is the
topmost position.
6. Turn the stitch length dial until the [2] is the
topmost position.
7. Lay a paper on the needle plate, and lower the
presser foot lifter to lower the presser foot.
8. Turn the pulley by hand, and drop 11 stitches on a
paper. (Fig. 1)
Needle
9. Raise the presser foot lifter and slide a paper, and drop 11 stitches on a paper while pushing down the reverse
sewing button. (Fig. 2)
Reverse sewing
button
Needle
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Straight forward/Straight reverse stitch length

Stitch width dial
Presser foot lifter
Presser foot
Paper
10 pitches
Presser foot lifter
4 - 32
Stitch length dial
Rear side
START
10 pitches
11th stitch
Forward stitch
Front side
Fig. 1
Rear side
START
11th stitch
START
11th stitch
Forward stitch Reverse stitch
Front side
Fig. 2
Pulley
Pattern
selection dial
10 pitches