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29.
BACKSTITCH (BK) SWITCH ADJUSTMENT (BL6800 Only)
STANDARD
The backstitch switch must come ON for reverse sewing lever operation with a feed of F or more.
When the feed is 3, the backstitch switch must not come ON in the reverse sewing lever play range (range in
which the feed adjuster is not pressed).
ADJUSTMENT
1.
Loosen the backstitch switch screw.
2.
Adjust the backstitch switch gap so that reverse sewing lever operation with a feed of F or more switches
ON the switch and so that for a feed of 3, the switch does not come ON in the reverse sewing lever play
range (range in which the feed adjuster is not pressed).
3.
Tighten the backstitch switch screw.
30.
BOBBIN WINDER SWITCH ADJUSTMENT (BOBBIN WINDING)
(BL6800 Only)
STANDARD
The gap between the bobbin winder switch and the bobbin winder shaft base must be 0.4 - 1.0 mm and in the
bobbin winding state, the bobbin winder switch must come ON.
ADJUSTMENT
1.
Move the A section of the bobbin winder shaft to the left.
2.
Loosen the bobbin winder switch screw.
3.
Adjust the gap between the bobbin winder switch and the bobbin winder shaft base to be 0.4 - 1.0 mm.
4.
Secure the bobbin winder switch with the screw.
Gap
0.4-1.0 mm
