Presser Foot Height Adjustment - Brother b831 Service Manual

PRESSER FOOT HEIGHT ADJUSTMENT
1. Raise the outer presser foot O with the presser bar lifter lever O.
(Check that the distance from the needle plate O top to presser foot O bottom is 10.5 mm.)
2. Insert a 10.5 mm block underneath the vibrating presser foot O-
3. Loosen screw O. and raise or lower either the vibrating presser foot O or presser bar 0 to adjust.
Firmly tighten screw O after adjustment is completed.
* The presser bar flat spring will cause the vibrating presser foot to drop when the screw O is loosened.
* Be careful not to turn the presser bar 0.
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