Singer HA-1 User Manual

-6-
TO THREAD THE BOBBIN CASE
Hold the bobbin case between
the left thumb and forefinger
with the slot up. With 4 or 5
inches of thread trailing in the
direction shown…
...insert the bobbin into the bob-
bin case and pull the trailing
thread back into the slot, down
and to the left, until it snaps into
the “delivery eye” under the ten-
sion spring. When you pull on
the thread, looking at the bobbin
in the open side of the bobbin
case, the bobbin should rotate
clockwise.
There should be a slight but
consistent tension (drag) on the
thread as it is pulled through the
“delivery eye.” The tension can
be increased by turning the ten-
sion screw clockwise decreased
by turning it counter-clockwise.

Singer HA-1 Specifications

General

Brand	Singer
Model	HA-1
Category	Sewing Machine
Language	English

Summary

Replacing the Needle

Needle Replacement Procedure

Instructions for removing the old needle and inserting a new one, ensuring correct orientation.

Bobbin Case Operations

Important Needle Position Reminder

Important reminder to always keep the needle above the machine surface during operations.

Removing the Bobbin Case

Step-by-step guide on how to safely remove the bobbin case from the machine.

Inserting the Bobbin Case

Instructions for correctly reinserting the bobbin case, noting latch grip and notch alignment.

Winding the Bobbin

Bobbin Winding Procedure

Detailed steps for winding a bobbin, including using the stop motion knob and thread path.

Threading the Bobbin Case

Bobbin Case Threading Setup

Instructions for holding the bobbin case and positioning the thread for threading.

Bobbin Case Threading Process

Guides threading the bobbin case, ensuring the thread snaps into the delivery eye correctly.

Upper Threading Procedure

Step 1: Place Thread Spool

Step 1: Placing the spool of thread on the spool pin.

Step 2: Thread Guide

Step 2: Leading the thread through the thread guide.

Step 3: Thread Tension Disks

Step 3: Running the thread through the tension disks.

Step 4: Guide Bar and Check Spring

Step 4: Threading over the guide bar and through the check spring.

Step 5: Take-Up Lever

Step 5: Bringing the thread through the take-up lever.

Step 6: Thread Guides

Step 6: Running the thread through the guides.

Step 7: Thread the Needle

Preparing for Sewing

Bringing Up Bobbin Thread

Bobbin Thread Emergence

Final Thread Positioning

Starting and Stopping Sewing

Initiating Sewing

Removing Sewn Work

Stitch Length Regulation

Stitch Length Adjustment Guide

Setting Stitch Length

Oiling the Sewing Machine

Lubrication Points and Procedure

Oil Type Recommendation