Hello, I was given a Shindawi T231 string trimmer. The string holder was out of string, and when it was put back together, it looks as though it wasn't assembled right. Is there someone that can show a picture of the cutter head and how to do this? I wasn't given a manual and I can't seem to find a place on the internet that shows what I need to see. Help?

This is my 4th Shindaiwa string trimmer, because I wear one
completely out every 3 or 4 years. I have been using them
since 1995. They are the greatest trimmer there is. Some times I am using it steadily for more than 2 hours at a time
and my hands never tingle. We take really good care of ours.
My husband uses a T230x which is out of date now, but it is
still going. We have been having trouble finding replacement
parts for the heads around our town. Am hoping I can find some online.