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4.5 Surfaces on shafts
Screwing
Figure 8: Surfaces on shafts
components
onto the surface
(1) - Surface
Some shafts have flat surfaces at those points where the components are
screwed on. This strengthens the connection and setting work is made
easier.
4.6 Locking the sewing machine in place
With some settings, the machine has to be locked in place. To do this, the
locking peg from the accessory pack is inserted into a groove on the arm
shaft crank to block the arm shaft.
Figure 9: Locking peg and arresting grooves on the arm shaft crank
(1) - Locking peg
(2) - Large arresting groove
There are two securing positions:
• Position 1: Loop stroke position
• Position 2: Handwheel zero position
16
Important: Always make sure that the whole screw is seated com-
pletely on the surface.
1
2
3
• 5 mm end in the large groove
• Setting the loop stroke and needle bar height
• 3 mm end in the small groove
• Setting the handwheel position and checking the top dead center for
the needle bar
(2) - Shaft
4
(3) - Small arresting groove
(4) - Arm shaft crank
Service manual H867 Version 00.0 - 08/2013
Working basis
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