Position of needle and hook
Service Instructions 171/173 - 00.0 - 01/2020 17
6 Position of needle and hook
6.1 Adjusting the rocker bolt for the hook drive and the lower
shaft bearing on the left
Fig. 4: Adjusting the rocker bolt for the hook drive and the lower shaft bearing on the left
WARNING
Risk of injury from moving parts!
Crushing possible.
Switch off the machine before you check and adjust
the position of the hook and needle.
NOTICE
Property damage may occur!
There is a risk of machine damage, needle breakage or damage
to the thread if the distance between needle groove and hook tip is
incorrect.
Check and, if necessary, reset the distance to the hook tip after
inserting a needle with a new size.
(1) - Gage
(2) - Rocker bolt
(3) - Face
(4) - Screws
(5) - Screws
(6) - Lower shaft bearing
(7) - Thread trimmer
(8) - Hook carrier
(9) - Screw
(10) - Hook drive housing
(11) - Screw
(12) - Gear wheel
(13) - Eccentric
(14) - Set collar
(15) - Oil collection tray
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