Brother Z-8550A, Service Manual

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8. CHANGING THE FEED AMOUNT TO LONG STITCH SPECIFICATIONS (from 2.0mm to 5.0mm)
Z-8550A, 8560A
64
8. CHANGING THE FEED AMOUNT TO LONG STITCH
SPECIFICATIONS (from 2.0mm to 5.0mm)
CAUTION
Replacement of parts should only be carried out by a qualified technician.
Turn off the power switch and disconnect the power cord before carrying out this operation.
The machine may operate if the treadle is depressed by mistake, which could result in injury.
When removing the needle plate and the auxiliary needle plate, use a screwdriver that matches the size of the
screw heads.If a screwdriver that does not match the size of the screw heads is used, it may damage the screw
heads and result in injury to the operator or damage to the articles being sewn.
Use only the proper replacement parts as specified by Brother.
1. Replace the feed dog (1) and needle plate (2) with the
ones for long stitches.
2. After this, change the maximum feed amount as
described below.
Changing the maximum feed amount
If the feed dog has been replaced by one that does not match the feed amount that is currently being used, the feed dog may
touch the needle plate if the stitch length dial or condense dial are mistakenly set to settings that are larger than the maximum
feed amount for the feed dog, and this could cause problems such as damage or noise.
In order to prevent dial setting errors such as this, change the maximum feed amount setting for the sewing machine to match
the maximum feed amount for the feed dog.
1. Tilt back the machine head.
2. For sewing machine models and specifications other than
8550A-031, loosen the two screws (1) so that the quick
reverse solenoid (2) can be moved up and down.
3. Loosen the screws (3) and (4).
4. Move the stopper (5) down as far as possible, and move
the stopper (6) up as far as possible.
(Continued on next page)
3499M
1178B
3498M