What is a Kenmore model 148.12070?

Answer 1

The lower bobbin threading is the same as most conventional sewing machines. just type "threading a bobbin" into YouTube and you'll get directions on that. The mechanics behind the 158.12271 are exactly the same, but instead of the bobbin holder facing towards to sewer, it is facing to the left of the sewer. This setup is extremely cumbersome, but if your model (which should also be series/serial number 0006784) comes attached to a desk, then you can lift the sewing machine up for better access. The tension for the upper part of the machine is extremely important! If the string is not laced properly, then the string with jam the machine.

This is how you lace/thread the upper portion of your machine. On the left of the top of the machine there will be a prong. It looks like a mishapened spring. Thread the string through the center of the prong. In front of the prong is a hook-like prong, thread through so that the string is now facing downward. Underneath this hook (on the left of the side facing you) is another hook, thread through accordingly. This is the important part!! There is a dial underneath the hook, thread the string clock-wise between the washers. This device controls the tension of the upper string. Now thread the string through the hole on the thread take-up. Pull the string down and through the hook underneath the tread take up. Then through the spring/prong closest to the needle. Then finally thread the needle.

Once both the upper and lower portions of the machine are threaded, thread the bobbin string by turning the crank towards you. This will cross the upper and lower strings; then pull on the upper string to lace the bobbin thread up through the throat plate.

After that, there isn't much left either then maintenance.

If you look at the bobbin holder, you'll notice two tabs keeping the holder in place. Pull those back, then take the threading piece, (it looks like a crescent moon) lube it up with any machine oil (I use Singer machine oil, but it really doesn't matter). Finally reassemble the bobbin holder.

Some helpful tips:

You can adjust the upper string tension using the dial.

The silver switch labeled "U" stops the feeders.

There are two cranks on the right side of the machine, one on top of the other. The large one activates the machine. The small one loosens/tightens the grip on the roller belt.

There's another larger dial on the right of the side facing you it has 6 settings. 0-5. 0 is the setting for stright line sewing. 1-5 is for zig-zag stiching.

Finally there is a tab. This is used to control the length of the string, and the direction of the sewing.

Thanks for reading! I hope your experience with this horrible machine is better than mine.