How to thread childs singer zig zag sewing machine

SOURCE: Singer 457 Zig Zag Sewing Machine not catching bobbin thread.

There are manuals avilable online to purchase for the singer machines, SOrry I was not able to locate a site that has them for free.
.... http://sewingonline.co.uk/singer-manuals.html

SOURCE: bobbin singer stylist zig zag model 477

Check this web page
http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Singer_Sewing_Machine_Threading/singer_477_threading_diagram.htm

SOURCE: i just bought my first sewing machine,its a singer

If you go to www.singerco.com under support, click instruction manual, then enter 750, I think that it will work for you and it is free to download. Please let me know if it doesn't help because there are 2 different model numbers here and the 727198 does not work, and the 758 would cost you $15, so I am hoping that it will get you started anyway and if that doesn't do it, I will find you something else.. My email is [email protected]

SOURCE: Dont know how to thread a Singer Zig Zag 457

Hi, here is a threading diagram for you which you can also print out to save.
http://www.sewusa.com/Threading_Diagrams/Threading_Pages/Singer_Sewing_Machine_Threading/singer_457_stylist_threading_diagram.htm
Happy Sewing!

SOURCE: Singer 758 model and the thread is bunching up from the bobbin under the material

try changing the needle--flat side goes to the back of machine
rethread the machine top & bobbin--make sure to use every thread guide
make sure bobbin is wound correctly & inserted correctly in the bobbin case
clean under the needle plate & in the bobbin area for lint or loose threads
if you don't have a manual try singer
Go to the singer website
Click on customer support--there will be a drop down menu
Choose instruction manual
In the box type the model number(example 758)
Click search