How To Thread A Kenmore Model 158 Sewing Machine

So you’ve got a Kenmore 158. Maybe you inherited it from Grandma. Or you found it at a thrift store for twenty bucks.

Let me guess: the manual is missing, right? Of course it is.

Don’t panic. I’ve been there. We’re going to fix this together, one thread at a time. Grab your machine, a cup of coffee (or tea, I don’t judge), and let’s do this.

Step 1: Meet Your Machine’s Weird Little Parts

First, take a breath. This is not a modern computer-sewing-machine. It’s a tank with a personality.

Look at the top of the machine. You’ll see a metal pin sticking up. That’s your spool pin. It’s the starting line for our thread adventure.

Now, find the little metal disc on top near the needle. It’s called the take-up lever. It looks like a hook with a hole. You’ll know it when you see it. That’s your goal.

Step 2: The Spool Dance

Pop your spool of thread onto the spool pin. Make sure it’s snug. If it wobbles, add a felt pad or a hair tie—whatever works.

Pull the thread off the spool to the left. Yes, left. Does it matter? On these old Kenmores, yes, it really does.

Now, guide the thread toward the front of the machine. You’re basically making a little bridge from the spool to the first guide. Easy, right?

Step 3: The Tension Tango

See that metal disc with the wire loop above it? That’s your tension assembly. Kenmore 158s are picky about this part.

Wrap the thread around the back of that metal disc. Then pull it down and between the two round plates. Only here.

You should feel a tiny bit of resistance. If the thread slides through like butter, you missed a step. Start over—I’m serious.

Kenmore 158.1789280 - 17892 Sewing Machine Manual PDF

Step 4: Hook That Take-Up Lever

Now, run the thread up toward the take-up lever. Remember that hook with the hole? That’s it.

Push the thread from right to left through that tiny hole. Yes, you need good lighting for this. Yes, you might need tweezers. Welcome to sewing.

Pull the thread down the other side of the lever. You’ve now made a perfect “U” shape. High-five yourself—quietly.

Step 5: Down the Chute

After the take-up lever, you’ll see two or three little metal thread guides on the way to the needle. They look like tiny fishhooks.

Weave the thread through each one. It’s like a miniature obstacle course. Don’t skip any—they’re there to keep your thread from going rogue.

Now, you’re at the needle. Thread it from front to back. If you try back to front, your machine will scream. Not literally, but you’ll know.

Step 6: The Bobbin Business (It’s Not Scary)

Okay, deep breath. The bobbin case is hiding under a metal plate near the needle. Flip that plate open.

Pull out the bobbin case. It looks like a tiny space pod. Hold it so the little metal finger points up. Drop your filled bobbin in so the thread unspools clockwise.

Pull the thread through the slot on the case until it clicks. Put the case back in. You’ll hear a satisfying snap if you did it right. If not, try again—you’ve got this.

How to Thread Kenmore Sewing Machine Model # 158 1212180 - YouTube

Step 7: The Handwheel Flip

Now the magic part. Hold the top thread with your left hand. Turn the handwheel (the big wheel on the right) toward you one full rotation.

Watch the needle go down and up. A little loop of bobbin thread should pop up through the hole. Grab that loop with your fingers.

Pull both threads toward the back of the machine. Boom. You’re threaded. Does it feel like a tiny miracle? Because it is.

Troubleshooting Tears (Because It Happens)

If your thread keeps snapping, your tension is too tight. Turn the little disc dial to a lower number—like from 5 to 3. Test on scrap fabric first.

If your stitches look like a tangled mess, you missed a guide. Go back and retrace your steps. The 158 is a forgiving machine, but it has rules.

And if everything goes wrong? Take a break. Have another coffee. This machine has been around since 1975. You are smarter than a hunk of metal, I promise.

One Last Tip

Oil your Kenmore 158 once a year. A drop of sewing machine oil where the metal parts rub together. It purrs like a kitten when you do.

Also, name your machine. Mine is called Bertha. She’s dramatic but reliable. It helps to have a relationship.

Now go sew something crooked—it’s the first step to sewing straight. You’ve got this. Really.