Barudan ZN-A, ZQ-A Sewing Head Maintenance Manual

About this manual

This manual provides technical maintenance instructions for Barudan ZN-A and ZQ-A sewing heads. It details procedures for adjusting needle depth to ensure proper loop formation and stitch quality, addressing issues like skipping stitches or looping. The document also covers hook timing adjustments and the complete replacement of the hook assembly.

What's inside

• Needle Depth Adjustment
• Hook Timing
• Hook Assembly Replacement
• Position Finger Adjustment
• Tools Needed
• Symptoms
• Causes
• Procedure
• Sew Test

Frequently asked questions

What tools are needed for needle depth adjustment?

A 3mm Hex Key (Allen Wrench), No. 1 Philips Head Screwdriver, and a Flashlight are required.

What are the symptoms of incorrect needle depth?

Symptoms include skipping stitches, looping, fraying, and breaking thread.

What tools are needed for hook timing adjustment?

A 2.5mm Hex Key (Allen Wrench), a Slotted Screwdriver, and optionally a Flashlight and a friend to help are needed.

What is the correct hook timing position?

The hook point should cross behind the needle in the middle of the needle scarf and approximately 1-2 threadwidths away from the needle.