Upper Feed (Dual Feed)-/Main Feed Synchronization (Pinning Position) - Bernina B 590 Service And Maintenance Manual

5.6.5 Upper feed (Dual Feed)-/main feed synchronization (pinning position)

Check:
• Remove stitch plate.
• Switch on upper feed-dog and main feed-dog.
• Turn main feed-dog stitch-length crank to maximum stitch length.
• Use pinning tool 030430.51.00 in pinning bore d to pin main feed-dog stitch length crank.
• Use pinning tool 030430.51.00 in pinning bore e to pin upper feed-dog stitch length crank.
• Use 3mm pinning tool 007937.50.00 in pinning bore f to pin base shaft.
• With opening at back, position synchronizing plate g 032798.50.00 onto main feed-dog.
• Lower presser foot.
• Upper feed-dog must sit flush against front of synchronizing plate without play or clamping.
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g
Adjustment:
• Untighten two screws i (T10).
• Bring upper feed-dog g into specified position.
• Retighten two screws i (T10).
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