Opening Singer Sewing Machine Cover to Repair Timing?

I have always found the way to get the quickest answer with my Singer is to call a local Singer Store or Quilting shop and ask my question as they are usually very helpful (good for business) and are familiar with these machines.

Google Singer or Quilting machines with your zip and hopefully there will be one near by but it is okay to call a distant shop. If you have a JoAnn's or Michael's Craft store in your area they many times have cards and numbers of people who own these machines and might be able to help you (they give sewing/quilting classes and want names from these stores).