Specifications

Lower Rail Retainer Adjustment
This adjustment affects the forward and backward movement of the bottom of the
needle case. Do not make the adjustment so tight that you preload the roller
bearing in the head so it wears prematurely. Do not have so much free play that the
needle has excessive movement.
1. Install the needle case into the lower rail retainer and attach the needle case to
the retainer plate assembly. Refer to the needle case installation procedure.
2. Loosen the screw under the lower rail retainer and push it towards the rear to
remove the play between the retainer and the lower rail of the needle case (see
Figure 3-31).
Note: If you have the trimmer option, you will have to remove the grabber blade
guide assembly to access the screw.
3. When the gap between the needle case bottom rail and the embroidery head
roller bearing is between zero preload and .002", tighten the screw under the
lower rail retainer.
gap between zero
preload and .002"
lower rail
retainer
roller
bearing
screw (under
lower rail retainer)
needle case
lower rail
(needle case
removed to
show detail)
NOTE: if trimmer option
installed, grabber parts
must be removed to
access screw.
front of head
Figure 3 - 31
Lower Rail Retainer Adjustment 3 - 35
110291-01, Rev D 3. Embroidery Head Maintenance