−15 −
Standard Adjustment
12) Installing position of the alternate vertical movement amount detecting switch
Alternate vertical
movement dial
• Speed in terms of the amount of alternate vertical movement can
be automatically changed over in 4 stages.
Stitch length : More than 6 mm
to less than 9 mm
2,000 rpm
2,000 rpm
2,000 rpm
1,800 rpm
Amount of alternate vertical
movement
Less than 2.5 mm
2.5 to less than 4 mm
4 to less than 4.75 mm
4.75 to less than 6.5
Stitch length : Less
than 6 mm
3,000 rpm
2,400 rpm
2,000 rpm
1,800 rpm
Switch (lower) (Wires :
White/black)
OFF
ON
ON
OFF
Scale of alternate vertical
movement dial
1 to 2.5
2.625 to 4
4.125 to 4.75
4.875 to 6.5
Switch (upper)
(Wires : Red/green)
OFF
OFF
ON
ON
Fig. 25
Alternate vertical movement
amount detecting switch
Top cover
Bush
Pin
Spring
Hole in section A
Red
Green
White
Black
Fig. 26
①
②
Convex
8 ± 0.1 mm
● Sewing speed of LU-1510-7
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