Don't have manual; just got it; need to know how to make bobbin

isn't this info in the manual? If you don't have one call singer and purchase one because it's not in the download area. And a search for the model 4663 brings up nothing.

you need to change the needle to a ball point,, but check your
manual to see what needle it recommends
if you don't have a manual let me know & I'll check to see if I can
find one for you
adjust the top thread tension--if the bobbin thread is loose, then
tighten the top thread tension one number or letter at a time higher,
if the bobbin thread is tight,, loosen the top tension one number or
letter less..
take the bobbin out & reput it back into the bobbin case--make sure it's
turned the right way

Search for:

Make Model bobbins

There are probably a lot of vendors online, ie Amazon... Also, a sewing machine repair shop or Brother dealer would have what you need.

http://www.sew4less.com/index.php
I don't know if the link will work for the bobbin case, if it doesn't
go to sew4less.com
Bobbin Case # 52237 NB, Click for model info.
Product #: 4754

Price: $ 19.95


Bobbin Case # 52237 NB, No backlash type.
A bobbin case, also known as a bobbin holder or bobbin shuttle, holds the bobbin that is filled with thread.
Each machine has a specific bobbin case. # 52237NB
Brother 755 Brother B714 Brother B735 Brother DDL-227 Brother DDL-555 Brother DL-5550 Consew 103 Consew 104 Consew 210 Consew 230 Consew 231 Consew 7360R Consew 99 Consew CN 223OR Janome / New Home 764 Juki DDL-227-L Juki DDL-5530 Juki TL98E Kenquilt 622 Singer 1300 Class Singer 1400W Singer 188K Singer 191U Singer 195K Singer 196K Singer 241 Singer 245 Singer 251 Singer 281 Singer 291U and more!

here are is a site that have manual
http://www.sewingpartsonline.com/

a sewing machine must have a bobbin case with a bobbin in it to sew.
I don't know any where you can get a free manual for a new home free, but you might check with Janome sewing machine website & ask them
if they have a free manual for the machine, I won't promise they will.
here are a few websites for parts & manuals for sewing machines
sewingpartsonline.com
sew4less.com
sewusa.com
sewvacdoctor.com
a1sewingmachines.com
ebay

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

What you're getting is called a bird's nest, and it's a frustrating pain. There can be a number of problems. First, try changing your needle. It may look fine, but it could be ever so slightly bent and causing a problem. If this doesn't work, take the fabric out of your machine. You'll need to manually turn the machine's wheel and watch through the window at your bobbin. Is the thread hanging up on something in the bobbin area when you're turning the wheel and creating a mess of thread in the bobbin area? Look at where it's catching in your bobbin. You may have a cracked bobbin case-this you can get a replacement for online. Look on eBay for your machine model. They're fairly easy to replace and I can help you with that. If the thread is catching on something else in the bobbin case, be VERY CAREFUL poking around! Don't be forceful with anything!
You could also have a tension problem with you're upper tension. You may be working with really thick fabric, too. It's a little hard, because I don't know what else is going on. Try some of this, though, and leave me comments. I check back daily and leave me some more details if these things don't help or if you need to replace the bobbin case and need more help. I'll get back to you within 24 hours normally.

Try checking the manual. If you don't have one, go to http://www.singerco.com/accessories/manuals.html where you can download one for free. It should tell you what bobbin you need in there. I know both of my Singers tell me the type of bobbin I need for each of them in their manuals.

If You have a drop in bobbin you will have to remove the hook and adjust the tension, however try adjusting the top tension before you remove the hook.

I discovered the same problem. What I figured out (after having the machine "repaired" several times) is that it seems as if the bobbin type may be the suspect. I started looking closely and it seems as if I have 2 different types of bobbins. So, I tried both types. Since I don't know the bobbin number(s), you will have to put up with my description .... the bobbin that is flat, top & bottom, seems to bunch up. The bobbin "bounces" when I sew. The bobbins that are rounded on the top and bottom don't seem to "bounce" and it doesn't bunch up the lower thread. Now, I have read my manual front to back and it does not say what bobbin type or number to use. So, if anyone knows, it would be a great help. I am assuming the correct bobbin is the "class 66" bobbin. Does anyone know for sure?