Pfaff 438 Series User Manual

14
Setting:
Adjustment:
14.1
.2
.3
.4
.5
Adjusting the hook bearing bracket
The hook shaft must contact both the vertical and horlzontai surfaces of the hook
bearing bracket gauge.
14.0.1
14.0.2
Remove bed slide, needle plate, feed dog and bobbin case position finger.
Loosen clamp screw1 and swing the bobbin case opener to the right.
Loosen,the two hook
set screws and remove the sewing hook from its shaft.
Loosen alien screw 2 on the bedplate and releasethe taper keyofhook bearing bracket 3
underneath thisscrew bytapping the head ofthe alien screw
lightly witha hammer.
Screw on the hook bearing bracket gauge so that on Ci. 438 and 838 machines number
438-439and on Ci.418 machinesnumber418-419can be read fromthe front(Fig.14.0.1).
By
turning and moving hook bearing bracket 3 bring the hook shaft into contact
with both the vertical and horizontal surfaces of the hook bearing bracket gauge.
In this position tighten alien screw 2.
Unscrew and remove the hook bearing bracket gauge.
24
From the library of Superior Sewing Machine & Supply LLC - www.supsew.com

Pfaff 438 Series Specifications

General

Brand	Pfaff
Model	438 Series
Category	Sewing Machine
Language	English