Strobel 141-23EV, Mechanic'S Instructions

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MA_141_142_A10-6-7-3-6-5_130617_en
4.3
Adjust stitch regulating bolt 137.0014 for stitch adjustment
Eccentric (A) 353.0031 (Fig. 1) and bolt (B) 137.0014 (Fig. 4) have to be
adjusted to the specific stitch length required for each machine (See chart).
Make sure that wing 223.0045 and rod 120.0082 are correctly set. Bolt
137.0014 must be mounted with the grain mark facing upwards because this
mark indicates the stitch length; in other words, it moves - in direction of arrow -
to the right (-) when at its smallest, and to the left (+) when the longest stitch is
being formed. (Fig. 4 and Fig. 5)
4.4
Adjust needle- and feed motion
If the machine is set to produce the longest stitch (see chart), the feed motion
stops when the point of the needle placed approx. 1.5 mm within the cup edge
before penetrating the fabric.
The feed motion starts when the needle is placed approx. 1 mm behind the cup
edge.
Needle- and feed motion are adjusted at needle bar eccentric (E) (Fig. 1), note
the foremost needle position (table).
When adjusting the needle bar, make sure that the needle clamp device at the
needle bar head stands exactly rectangular to the rear feed cup.
Fig. 5