2.2.2 Position of the lower toothed belt wheel
Caution: Danger of injury !
Switch off main switch.
Check and adjust position of the lower toothed belt wheel only when
the sewing machine is switched off.
Standard checking
The lower toothed belt wheel 1 must abut on the bearing 3.
The core pins 5 in the toothed belt wheel 1 must sit on the flat spot of
the lower shaft 4.
–
Check whether the toothed belt wheel abuts on the bearing.
Correction
–
Pull off toothed belt from the lower toothed belt wheel 1.
–
Loosen core pins in the toothed belt wheel.
–
Turn toothed belt wheel 1 until the screws s it on the flat spot of the
lower shaft 4.
–
Hold lower shaft 4 and push toothed belt wheel 1 to the left as far
as it will go.
–
Screw core pins 5 tight in the toothed belt wheel 1.
–
Put the toothed belt 2 on the toothed belt wheel 1 again.
ATTENTION Danger of breakage !
After changing or removing the toothed belt check the following:
Hook adjustment (see chapter 2.5), feeding motion of the feed-dog
(see chapter 2.3.3) and lifting motion of the feed-dog
(see chapter 2.3.4).
7
GB
43521
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