Adjusting The Stitch Length - Brother LZ2-B850 Service Manual

5-6. Adjusting the stitch length

u
1048S
The feed amount is set by means of the feed adjustment dial q.
The scale is a guide only; if the length of the finished stitches differs greatly from the scale value, make the following
adjustment.
1. Turn the feed adjustment dial q clockwise as far as it will go so that the stopper w touches the pin e.
2. Push the pin e using a screwdriver or similar tool to separate it from the stopper w, and check that the feed adjust-
ment dial q cannot be turned any further clockwise even when this is done.
If the feed adjustment dial can be turned further, turn it until it cannot turn any further.
Loosen the screw r, turn only the dial section of the feed adjustment dial q so that the stopper w touches the pin
e, and then tighten the screw r.
<If adjusting the forward feed amount and reverse feed amount so that they are the same>
Specification
-1 (Max. stitch length 2.5mm)
-3 (Max. stitch length 5mm)
t
1010S
3. Set the feed adjustment dial q as indicated in the table.
4. Turn the condensed stitch adjustment dial u counterclockwise as far as it will go.
5. Adjust the feed amount so that the length of material fed after 10 stitches (after the machine pulley rotates 11 times)
and the length of reverse feed when the reverse lever i is pressed (after the machine pulley rotates 11 times) match
the distances given in the table.
6. Loosen the set screw t and turn the eccentric pin y to adjust the feed amount.
* After adjusting, carry out the "<Backtacking and condensed stitches>" adjustment in the next section also.
q
r
i
1008S
1009S
y
LZ2-B850,B851
w
q
Scale position
1.5
3
y
t
Normal
feed amount
increases
5. ADJUSTMENTS
e
Feed amount per 10 stitches
15mm
30mm
Reverse
feed amount
increases
1007S
1011S
5-04