Singer 153k103 stitch length adjustment

[Lugubrious]

Hello all and good day, I am trying to adjust the stitch length on my 153. I’ve visited an older forum about the issue but haven’t been able to find a solution. The knob doesn’t work and tightening or loosening the small screw where you can see the 0s up top aren’t doing much. Right now it’s set at a low stitch count and would like to get longer stitches. Are there any other alternate suggestions? The photo is the screw I messed with, underneath there is no second screw.

[Lugubrious]

4 minutes ago, Lugubrious said:

Hello all and good day, I am trying to adjust the stitch length on my 153. I’ve visited an older forum about the issue but haven’t been able to find a solution. The knob doesn’t work and tightening or loosening the small screw where you can see the 0s up top aren’t doing much. Right now it’s set at a low stitch count and would like to get longer stitches. Are there any other alternate suggestions? The photo is the screw I messed with, underneath there is no second screw.

Underneath the set screw I can see the stitch adjustment rod turning whenever I turn the wheel. Could it be that I’m missing the screw that adjusts the stitch length? 

[Lugubrious]

1 minute ago, Lugubrious said:

Underneath the set screw I can see the stitch adjustment rod turning whenever I turn the wheel. Could it be that I’m missing the screw that adjusts the stitch length? 

Photo of said screw

[Constabulary]

I have this extract from a 153w manual maybe it helps

[Lugubrious]

8 hours ago, Constabulary said:

I have this extract from a 153w manual maybe it helps

So I don’t have that second screw “cc” I assume that one screw is “bb” I wish the photo was clear to see what these screws exactly looked like. From your experience are these screw pretty proprietary?

[Constabulary]

I think the screw you show in your picture is the screw CC which comes in contact with the spindle. What is missing is screw CC.

This is from a Singer 153 parts list. So your screw with the long unthreaded end is CC / # 13069 and what is missing is screw BB / # 10764 which locks the screw CC.

Make sure the parts 13066, 13067 13068 are present as well and noting in the mechanism is gummed and everything is well oiled.

EDIT:

Also check the threaded end of the top shaft (where the spindle goes in) if it is undamaged and the small pin on the inside of the spindle knob is present and is following this thread when you change the the stitch length.

 

Edited November 26, 2024 by Constabulary

[CowboyBob]

By turning screw CC & the stitch length knob both in all the way should give you a long stitch length.You might also check the feed dog height to make sure it rises above the needle plate when it feeds.We do have both screw BB & CC in stock,BB is used to keep CC locked in.

[Lugubrious]

13 hours ago, Constabulary said:

I think the screw you show in your picture is the screw CC which comes in contact with the spindle. What is missing is screw CC.

This is from a Singer 153 parts list. So your screw with the long unthreaded end is CC / # 13069 and what is missing is screw BB / # 10764 which locks the screw CC.

Make sure the parts 13066, 13067 13068 are present as well and noting in the mechanism is gummed and everything is well oiled.

EDIT:

Also check the threaded end of the top shaft (where the spindle goes in) if it is undamaged and the small pin on the inside of the spindle knob is present and is following this thread when you change the the stitch length.

 

So I do have the set screw and spring, I’m confused where you speak of the spindle I hope this photo is the the spindle. I can see some threads on the tip but it looks pretty flat. I’ve heard of people grabbing a dremel using that to get the spindle right. I’m just not sure if I’d be sanding it down 

Edited November 26, 2024 by Lugubrious
Added more information

[Lugubrious]

6 hours ago, CowboyBob said:

By turning screw CC & the stitch length knob both in all the way should give you a long stitch length.You might also check the feed dog height to make sure it rises above the needle plate when it feeds.We do have both screw BB & CC in stock,BB is used to keep CC locked in.

So when I turn the screw all the way and the stitch length knob. I can feel the stitch length knob feel like it’s locked in, not stuck or anything more as if it’s set. The dog feed looks flush with the plate it isn’t rising above the plate.

[CowboyBob]

1 hour ago, Lugubrious said:

So when I turn the screw all the way and the stitch length knob. I can feel the stitch length knob feel like it’s locked in, not stuck or anything more as if it’s set. The dog feed looks flush with the plate it isn’t rising above the plate.

Ok,if they both are all the way in try raising the feed dog so it can lift the leather off the plate,also check that feed dog doesn't have any play in it by pushing it front to back,try the needlebar too,sometimes parts in the feed system get loose & need to be tightened or replaced.