Darning Foot Height; Position Of Hook Driver In The Hook Race - Bernina aurora 430 Service Manual

70

Darning foot height

Standard:
• Attach darning foot.
• Drop feed-dog.
• Turn handwheel until presser-foot bar
reaches its lowest position.
• Use gauge 87 to check distance (0.5 mm)
between stitch plate and darning foot
sole.
Correction:
• Remove adjusting wheel lock 161.
• Remove adjusting wheel 162.
• Pin loop lift position (balance piece).
• Loosen screw 88 on hopper mechanism
lever.
• Place presser foot on gauge 87.
• Tighten screw 88 - take care with cam
position.
• Refit adjusting wheel 162.
• Refit adjusting wheel lock 161.
• Check functioning.
• See also presser foot height illustration on
page 69.
Position of the hook driver in the hook race
Standard:
The hook driver should be 0.1-0.15 mm
behind the front edge of the hook race.
Correction:
• Loosen screw 169 on driver shaft.
• Move complete driver into prescribed
position.
• Retighten screw 169 flat.
88
Lift here to achieve 0.5mm
87
0,5 mm
169