Table of Contents
Advertisement
Work fundamentals
3.7 Flat surfaces on shafts
Screwing onto
Fig. 16: Flat surfaces on shafts
flat surfaces
(1) - Flat surface
Some shafts have flat surfaces at places where components are to be at-
tached. These make the connection more stable and setting easier.
Always ensure that the screws are completely flush with the flat surface.
3.8 Locking the sewing machine
For some settings, the machine must be locked. To this end, the locking
pin (1) from the accessory pack is inserted into a groove on the adjusting
disk, in order to block the arm shaft.
Fig. 17: Locking pin and tracing grooves on the adjusting disk
(1) - Locking pin
(2) - Marking
There are letters on the handwheel (3) for orientation. If you turn the hand-
wheel such that one of the letters is next to the marking (2), this means
that the corresponding groove on the adjusting disk (4) is under the open-
ing for the locking pin (1).
There are 6 locking positions for the following settings:
• Position A
• Position B
Service Instructions 610/630 - 00.0 - 10/2014
(2) - Shaft
③
②
①
• Adjusting disk on the upper toothed belt wheel with its deepest slot A
to the groove in the arm shaft crank
• Symmetry of the looper motion, i.e. when turning against the direc-
tion of rotation of the machine, the needle tip must also be in line
with the center of the needle as is the case for slot C.
B
A
①
F
E
(3) - Handwheel
(4) - Adjusting disk with tracing grooves
C
④
D
23
Advertisement
Table of Contents
