In depth servicing of the motor, light, foot control and power cord on a Singer 99 sewing machine

This late model Singer 99K sewing machine is getting an electrical update! I will fully disassemble and clean the motor and put it back together and then switch out the foot control to a new electronic style one. This machine also gets a new vintage style plug! At the end we will power it up and make sure everything functions, really rewarding after all that work! This video is part of a series for the late model Singer 99, showing you how to disassemble, clean and reinstall all the parts. Once we are finished this 99 will be sewing beautifully! Follow along for an in-depth understanding of how your 99 works and learn how you can service and restore your machine on your own!
Learn more about Sewing Machine Rehab at: www.sewingmach...
Look below for links to most of the products you will need:
Specifically in this video:
Snakehead vintage: www.snakeheadv...
LED screw in light bulb: amzn.to/3V7Etag
Foot control: amzn.to/4erWIjJ
Grease wicks: sewingmachiner...
List of various supplies and links to help you with this project:
Various sized flat head screw drivers such as...
Chapman screwdrivers Kit No. 9600: amzn.to/47R4n7N
Craftsman Ratcheting Offset Screwdriver: amzn.to/3Ehii9o
Magnetizer/Demagnetizer: amzn.to/3F7gmAI
Nylon tip non-marring pliers: amzn.to/3tb4NWu
Penetrating oil, I love Aerokroil by Kano: amzn.to/3R1a25h
Lily White Sewing Machine Oil: amzn.to/3Ej1O0F
Sew-Retro Sewing Machine Grease: singer-feather...
91% Isopropyl Alcohol: amzn.to/45tO7rv
Zymol Cleaner Wax: amzn.to/3P05c5o
Krud Kutter: amzn.to/3Ek2inh
Krud Kutter - The Must for Rust: amzn.to/3R2lKfR
Regular Cotton Swabs: amzn.to/3YW22nS
Pointy Cotton Swabs: amzn.to/3ECINXn
Old cotton t-shirts cut into pieces or other rags
Blue shop towels: amzn.to/45yO2D6
Sandwich bags (to keep parts together)
Feeler gauge for setting feed dog height and presser foot height: amzn.to/3YZJbbq
Thread tension meter: singer-feather...
Tweezers: amzn.to/45Os7r7
Several small artist paint brushes and a 1" chip brush (you can buy on Amazon but they are cheaper at stores like Walmart and Harbor Freight)
*As an Amazon Associate I earn from qualifying purchases
**As an Featherweight Shop Associate I earn from qualifying purchases

[@marnieanderson4257]

Do you have a video showing how to repair the wiring on a 1926 bentwood knee lever (round) motor. Not the machine itself but the knee lever in the bottom box.

[@randykoger4646]

Excellent video and so well thought out and thorough. Really love watching your work. Exemplary.

[@SewingMachineRehab]

Thank you so very much and thank you also for watching!

[@lfuentes8891]

Thank you so much for making these educational videos!! I was able to rebuild my 99k motor tonight . It runs so nice now.. ❤

[@rhondamercado7527]

Girl! I just have to thank you and Bob Fowler for helping me tackle a project on a 66 motor rewiring rollercoaster. Of course I saved this video for future reference but thanks to y’all I overcame that fear and got it done. I didn’t have a good lamp to put on there because the one that was on there was totally ruined so I didn’t get to add the lamp wire to the mix. That’s ok, I have the video for when the next opportunity presents itself. Thank you again.

[@SewingMachineRehab]

That is awesome! Glad we could help!

[@craftingaplannedlifejoanna9291]

This already just amazes me... What a great tutorial... So detailed & informative. Thanks for sharing. Can't wait to see what's next!

[@SewingMachineRehab]

Thank you! Cleaning is next, it’s halfway filmed, having a ton of fun!

[@sewterie]

This was so helpful Jenn. Thanks for sharing and thanks for showing how you work with the new style foot pedal. Keep 'em coming.

[@SewingMachineRehab]

Thanks! I plan on showing how to wire the new foot control in a separate video when I have time. At least I was able to share that it is possible to change it out in this video!

[@sewterie]

@@SewingMachineRehab Yup. It is a needed video.

[@prometheansewingmachines]

Great job on the motor! Thank you. I'm so glad you don't have to dissect that fish eye light! They are evil 😅

[@SewingMachineRehab]

Me too! Got lucky with this one!

[@kennethepps3425]

One question, I'm redoing a BZ 15-8 on an early 99K. Is there a trick to how much the case screws are tightened? If I apply torque, the armature does not spin, I have to back off the screws. Spacers?

[@SewingMachineRehab]

Hi! It should spin freely even when the screws are tightened down. You can try moving around the spacers or removing one. Sometimes I find it helpful to lightly tap the pulley end of the shaft to make sure the other end is seated all the way down into the housing. Make sure that the grease wicks are not sticking out of the tubes and impeding the shaft from spinning. That’s about all I can offer without actually seeing it myself, I hope you can figure it out!

[@johnstark3058]

is there a spec. on how much end play the motor shaft should have from end to end, mine seems to have exessive end play, iam wondering if someone has been in this motor before me and left out a shim/thrust washer? Also is that thread looking stuff that is wrapped around just under the commutator supposed to be there, it's on mine as well and I don't see it there on other motor rebuild videos, thanks for your help 😁

[@SewingMachineRehab]

Hi! A tiny bit of end play is ok. Too much will make it noisy. I am not sure if there is a spec, I haven’t seen one before so I usually go by feel. As far as the thread you are seeing, I would need to see a photo of it before I could answer. I hope that helps!

[@brenken]

I needed exactly this information! Thank you so much!

[@SewingMachineRehab]

You are so welcome! Glad it was helpful!

[@demonjacklindsey]

This is exactly what I needed to replace the old cracked cords. I have that exact same motor on my machine.

[@SewingMachineRehab]

Yay! I am so happy it helped!

[@brendaclement6753]

I would like to know more about the 'screwstarter' screwdriver that you used. Is it magnetic?

[@SewingMachineRehab]

Hi! Those came from McMaster Carr. They have many different sizes but the ones I have are not magnetic. Doesn’t matter, they still make the job way easier. I think they are pretty affordable as well, I don’t work without them!

[@KathrynRose-schultz-qs6qw]

Enjoyed your video content🎉🎉🎉

[@SewingMachineRehab]

Thank you so much!

[@Mrsfalldowngobump]

This was EXACTLY what I needed to see, thank you!

[@SewingMachineRehab]

Yay! I am so glad to hear that, good luck with your project!

[@claudiabrunet-nk1ox]

I have a white rotary and every time I plug it in it smokes. Any suggestions?

[@SewingMachineRehab]

Hi! I would definitely not plug it in again until someone can check out the motor and wiring for you. Smoke is a bad thing and I wouldn't want you to have a fire or get electrocuted. Best to take it to someone who can check it out for you. Good luck!

[@SewingMachineRehab]

Hi! Smoke is never good, I wouldn't plug it in again. If you can take it to someone who can go over the wiring and check the motor for you that would be best. It would be awful if it started a fire or electrocuted you. Wish I had better news but in this case, it needs someone who services machines to look at it. I hope that helps and good luck!

[@kennethepps3425]

Thank you, I've been looking for a tear down of a BZ series motor. Great work.

[@SewingMachineRehab]

Thank you! It was fun to dive into, my first time on that particular model. Figuring out the wiring schematics was the hardest part, but now that I have done it once it will be easy! Good luck with your project!

[@kennethepps3425]

@@SewingMachineRehab You have my gratitude. I was able to clean and rewire the BZ motor (it looks like it was in a fire due to melted cables) and it works. I was really anxious before I plugged it in.