52 Husqvarna service manual 104 72 30-26
Thread tension device compl.
Dismounting
Remove the rear cover (P.44).
Remove the front cover (P.44).
Loosen the cables of the step motor and of the lamp
from the the circuit board.
Loosen the two screws (A) holding the thread tension
device.
The thread take-up spring (B) can be exchanged if the
wedge is pushed out of the adjustment
casing and if the latter is removed from the plate.
Thread tension discs with spring (C) can be replaced by
unscrewing the adjustment screw (D) of the plate.
Mount in the reverse order.
NOTE!
Connecting the cables, see wiring diagram (P.13).
The driver
Dismounting
Remove the bobbin case.
Loosen the 4 screws of the hook cover and remove the hook.
Set the slot of the driver under the feed dog.
Undo the locking screw (A) of the driver which is accessible
through the base plate.
Push out the driver by pressing on the shaft (B) from the rear.
Mount in the reverse order.
NOTE!
The position of the groove of the shaft.
Thereafter set:
The cog play of the hook gear (P.23).
The gap between the hook cover and the driver (P.24).
The gap between the hook and the needle (P.28).
Setting the stitch plate in relation to the needle (P.29)
Setting the timing of the hook in relation to the needle
(P.30).