Strobel 441-1, Mechanic'S Instructions

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MA_441-1-2_A1_180830_en
Fig. 9
4.5.2
Set the looper eccentric (1) (at position "1") so that its surface is horizontal (
Setting the looper eccentric
Fig.
9). During a later partial rotation of about 100° at the handwheel (position "2"),
the back-most needle position is reached. The looper is positioned then about 2
mm left of and about 3 mm over the needle, differently depending on the loop
stroke (Fig. 10a). During forwards movement of the needle, the needle point
arrives then at the right looper edge, whereby the needle point stands about 1
mm over the looper and then moves over the looper at an unvarying distance
(Fig. 10b). The needle point is located at the rear dead centre of the looper,
lateral and longitudinal movement, depending on the loop stroke, about 1 - 3
mm within the feed cup.
Fig. 10