Operation Manual

Operation
Operating manual 969 - 00.0 - 08/2014 47
Lowering presser foot:
The presser foot can be lowered in two ways:
1. Manually turn hand lever to position(0).
2. Raise presser foot with pedal. Presser foot rises slightly, the
hand lever lock disengages and the internal spring moves the
hand lever back to position (0).
5.11 Setting presser foot pressure
The adjusting wheel at the top left of the machine arm determines
the contact pressure of the sewing foot on the material to be sewn.
The pressure can be adjusted continuously by turning the adjust-
ing wheel.
Correct setting
Set the pressure of the presser foot as low as possible, but high
enough so that the material can pass through evenly without
slipping through.
Defects due to incorrect setting
• Pressure too high:
Material is torn by the feed dogs. Feed is very loud.
• Pressure too low:
• Material slipping through causes an uneven stitch length.
• When moving up, the needle also takes some of the mate-
rial from the presser foot due to friction.
WARNING
Risk to injury to eyes.
Loosening the adjusting wheel too much can
cause it to unscrew and be shot off by the spring
underneath.
Never exceed a value of H = 55 mm, see fig. 24.