Have lost the post to hold spool of thread on top of machine model 12512 machine about 25 yrs old the post just screws on .possible to get a new one?

If you're using the horizontal spool pin, be sure the spool is inserted onto the spool pin in the proper orientation. Per the manual; Set the thread spool on the spool pin so that the thread unwinds from the front of the spool.

Horizontal spools require the spool cap be equal or greater in size than the spool diameter. Using a smaller cap may result in the thread snagging on the spool edge.

Be sure to follow threading instructions exactly.

Always try different manufacturer thread to eliminate the possibility of weak or bad thread.

Likely uneven feed (top thread snagging on spool). This machine has a horizontal spool so be sure the the spool cap is larger than the spool and double check with the manual on which way the thread is supposed to come off the spool... I believe it should fall forward, so if not then flip the spool.


Could also be top tension is extremely high.


Or possibly the bobbin thread has no tension... be sure to hold the bobbin spool with right index finger while you guide bobbin thread into slit. You should feel the bobbin thread slide underneath the bobbin case tension spring. See machine instructions.

Try a brand new needle. Also, verify it is threaded correctly. If that doesn't work, then it is possible the machine is out of time. Search for sewing machine timing or take it for service.

Hard to diagnose without the machine brand and model.

However, I suspect that you may not have the machine threaded properly--possibly a thread guide has been missed between the thread spool and the tension disk... Consult your owner's manual.

...

http://www.fixya.com/support/t14293048-not_know_replace_spool_pin_spool_cap
Posted on Sep 11, 2012

This is from a Model 5160; might it work?
Two ways.. either put the new spool pin in the other extra hole to the left of the trap door on top
OR take out the two bigger screws on the top cover that hold it in, also take off the knobs on the front sliders (patterns selection) and remove the top cover. Push the old pin out from the inside with nail or something similar and replace. Posted on Feb 03, 2010

Parts diagram show on the left as # 10.
http www searspartsdirect com Brother Sewing machine Parts Model...

Depends on the model, for detail but basically: Ensure the takeup arm / needle is at the top of its motion - with electronic models this is easiest done just by 'blipping' the foot controller and the needle will automatically return to top. Put your spool of thread on the spool pin. On older models with the vertical spool pins ALWAYS use a felt pad underneath to prevent the spool spinning when the thread is drawn off. On later models with a horizontal spool pin, hold the spool in place with the correct size retainer, with the larger diameter facing away from the spool. Make sure the foot is up (this is important). Draw thread off the spool and route it through the pre-tensioner on the back of the machine, then through the slot until it passes through the tension discs next to the tension control. The thread is then brought down the right-hand-side of the takeup arm cover, and pulled-up the left-hand side (it should be pulled into the check spring at the bottom, automatically. Pass the thread around the right-hand-side of the takeup arm and then the left-hand-side so that the thread is left running through the takeup arm. Drop the presser foot. Route the thread behind the lower thread guide at the bottom of the takeup arm cover and then through the thread guide at the bottom of the needle bar, just above where the screw that retains the needle is situated. The thread guide might be a simple loop of wire or a clip on the botom of the needle bar. Thread the thread through the eye of the needle either manually or using the needle threader, if fitted and off you go. It's important to have the foot raised when routing the thread through the upper tension discs to make sure the thread sits properly within the discs rather than just going over the top of them. Raising the foot holds the tension discs open.

This is not what you want to hear but... recheck the threading yet again. This time totally unthread it and start again. Look at the spool that holds the thread and where the thread is coming off of the spool itself. Look to see if the little notch you take the thread out of when you first open a new spool is catching the thread as it turns on the spool. If there's a possibility that is happening make sure that end of the spool is at the top. Sometimes the thread will get catch and therefore refuse to move when it is on the bottom side of the spool.

Also check to make sure the thread isn't wrapped around any of the guides and once again check to see that it is threaded correctly.

If it isn't just the thread breaking but the machine itself seeming to lock up and not move then you need to take it in for servicing.

You could buy a generic thread stand aerial to overcome this problem.

These items are targetted at machine embroidery enthusiasts using multiple thread colours but could be easily modified to hold your 4 cones.

Or try www.sewingpartsonline.com and see if they carry this part.

I love my 334D and have paid for major repairs to it rather than replace with the lighter weight new models I found available.

my CG550 is running very slow I need help?

I found a website for you that might help. They have a lot of kenmore manuals including one similiar to your model#148.12051. The manual opened as model 1205 so maybe searching for your model as the 1201 might help too. hope this helps! =)

http://homeappliance.manualsonline.com/manuals/mfg/kenmore/kenmore_sewing_machine_product_list.html