Bottom Feed; Base Setting For Stitch Adjustment And Stitch Length Limit - DURKOPP ADLER 838 Service Instructions Manual

2. Lower (bottom) feed
2.1

Base setting for stitch adjustment and stitch length limit

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Rules:
1. When setting the stitch length at "0", the stitch regulator gear should
have as little play (clearance) as possible when you press down on
the bartacking lever.
2. The maximum stitch length is limited to 8 mm.
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–
Loosen screw (1) and take off the settings dial (2).
–
Turn the screw (3) as far as needed to the right using a 10-mm
spanner wrench. Verify that the stitch regulator gear is without
motion by pressing down on the bartacking lever. This fulfils rule 1.
–
Set the scaling ring (4) with stitch length 0 to align with the circular
mark (5).
–
Limit the stitch length according to rule 2. For this, screw the
retention pin (6) into the proper hole. The holes are marked with
numbers which indicate the maximum stitch length.
–
If a maximum stitch length of 7 mm is required, unscrew the screw
(6) for 2.5 mm. Another end stop is available for this length.
–
Put the settings dial (2) back on and tighten the screw (1).
Caution: Risk of Injury!
Turn the main switch off.
Only carry out this stitch adjustment when the machine is turned off.
ATTENTION: Danger of breakage!
If the set stitch length is larger than allowed by the sewing equipment
in use, then the needle will hit against the throat plate insert.
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GB
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