8.2 Sewing Foot Locking
The lifted sewing feet are locked in position “up” by lifting lever 1 (e.g.
for winding the bobbin thread or for changing the sewing feet).
Caution: Danger of injury !
Switch off main switch.
Check and adjust height of the locked sewing feet only when sewing
machine is switched off.
Standard checking
The distance between the sewing feet locked in position “up” by lifting
lever 1 and the throat plate should amount to 8 mm.
–
Set minimum sewing foot stroke (setting wheel in position “min.”).
–
Move both sewing feet to the same level by handwheel.
–
Lock sewing feet in position “up” by lifting lever 1.
–
Check distance between locked sewing feet and throat plate.
Correction
–
Place spacer (8.5 mm thick) below the locked sewing feet.
Due to the clearance in the transmission elements the sewing foot
height will be 8 mm.
–
Loosen clamping screw 2 at lifting block 3.
–
Take off head cover.
–
Press dowel pin 6 upwards until the end of the slit in fork lever 5.
–
Press lifting block 3 against the surface of lifting lever 1.
Attention!
Lifting block 3 must not be shifted axially because shaft 4 is axially
fixed by same.
–
Tighten clamping screw 2.
Lifting lever 1 must be positioned in such a way that its surface is
parallel to lifting block 3.
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