7
104 72 79-26
4. Setting the hook in relation to the feeding eccentric (after feeding)
The position of the pin (C) shall be 1.5 mm from the top of the frame opening
when tip of hook is straight back.
5. The gap between the needle and the hook
The gap should be as small as possible, but max 0.15 mm.
6. Setting the needle plate (the hook cover) in relation to the needle in the fee-
ding direction.
The needle should, the feeding direction, descend right into the middle of the
needle hole of the needle plate.
7. Setting the feed dog in relation to the needle plate
Sideways the feed dog should be symmetrically set in relation to the needle
plate slot.
8. The height of the hook
The distance between the bobbin case and the case holder should be 0.5
+ 0.1
-0,05
mm.
9. Feed dog height
When Feed dog teeth are in its highest position they should be 0.9-1.1 mm
above the needle plate.
3. The play of the hook gear
It is impossible to obtain an equally large play in one rotation of the cog
wheel, but it should be as small as possible at the tightest spot during the
revolution
2. Belt tension, motor belt
The belt tension spring (A) should normally be positioned in middle slot
on the belt tension device.
Settings - Quick refrance
1. Belt tension, drive belt
The belt tension shall be adjusted by turning the eccentric bearing (B)
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Settings - Quick reference
MM
MM
0.9 - 1.1 mm
413 12 73-01
A
C
B
1.5 mm
