Help with old Singer cylinder arm machine

[Metalhorseman]

Thank You Tejas !

Have some more questions 

figured out how to move hook assembly horizontal or North as some say .. now that I have it all out of wack ,lol. From my understanding you have to start by getting straight stitch dead on , and can not get it still off an 1/8”. Took apart bight adjustment knob and found at the end of the pin is a worn spot /Divet in the metal.. could this be why I can’t dial in straight stitch ? Divet is not as much needle travels in the west to east movement. 
Was reading for hours and one guy gave this lady a procedure to adjust machine in a certain order .. wish I would have mark it some how to read again , think I read 20-30 pages yesterday .

hey Tejas think u can work magic again on my pic ? 
Also is there a certain correct distance gears need to mesh on the hook assembly shaft when I get back to adjusting needle bar height and hook to eye distance?

Thanks Wayne,

back to reading 

 

Sorry for double post,, I did the email to myself way !!!!

[DonInReno]

The order of adjustment of a hook on almost any industrial machine is to first install a new needle, then bring the needle to bottom of its stroke, then keep turning the handwheel until the needle raises the thickness of a nickel, or 3/32”.    At this position the very point of the hook should be at the center of the needle and 1/16” above the needle eye.  If you’re making a 1/8” zig zag then the hook would be 1/16” to one side of the hook, then the next stroke it would be 1/16” to the other side.   The needle bar is adjusted up or down as needed. The hook is now timed with the needle.

Then the distance (gap) between the tip of hook and needle is adjust to be as close as possible without touching.

Many sewing machine adjustments aren’t intuitive, I’d suggest not adjusting anything further until you know for sure what it does - many machines have been adjusted in the wrong ways until they are are very hard to sort out.   I’m guessing the person before you couldn’t figure it out and whatever they did isn’t helping.  I wouldn’t mess with anything zig zag related until the hook is figured out - just set it for as close to a straight stitch as it will do and that will be close enough.  I looked a bit and have yet to see an online service manual for this machine or the 107w50 that describes hook adjustment and what set screws to use.

On the one picture showing the needle and hook assembly - the surface finish of the  flat surface is terrible - I’d be very surprised if it was made by Singer.   There is a chance that this hook is a poorly made replacement part that has never worked properly.  First I’d find a manual that shows the proper adjustment, if it won’t adjust properly then look closer at a replacement part.

 

[Metalhorseman]

Hey Don , ya I put new #20  needle in ,when I loosened up screws to slide assembly a tad away from needle. I was following the manual that said to remove to arm that holds the one side of hook assembly that just touches the most northern side of assembly and it kinda spun around more then I was hoping.  Now it's all loose and not engaging with other gear.figured I can slide gear back where it was.  I'll try again after work tomorrow and see if i can post another pic or two .Machine does rotate alot smoother now that needle isnt touching anything which is a good sign I think .lol Any idea where I would find a list of of what needle sizes I could run in this machine ? Missing a few throat place screws ,those little buggers can't be found at ace hardware !