kenmore sewing machine model 158/13010?

First, try to find an online user's manual by going through Google or Dogpile. In the search box, type in something like "manual for kenmore sewing machine 158/13010" and send it on its way to search.

If that doesn't work for you, email me directly (by clicking on the name under my avatar) to answer my questions so I can answer yours. I'll be glad to help. I am experienced at using a ton of different machines, especially older ones, but don't know them by name so you'll have to describe it for me. Here's what I need to know: Where is the bobbin housed on this machine? Where is its door or cover? How does that open? Is there a removable case for the bobbin? (Be sure you have the right size and style of bobbin. The ones that don't have a removable bobbin case take a class 66 and those that have a removable one take a class 15, generally speaking.) Case or not, how does the bobbin go in?

Where is the bobbin winder? Have you found the little doodads (not a correct technical term!) through which the thread goes when winding a bobbin? Do you know how to wind a bobbin?

OK, that's enough to get started. If you can answer these questions as best you can to tell me what the machine looks like, I can probably help you. I've used a whale of a lot of different machines over the years in several countries,and can make most of them cooperate pretty well. I'm best with the older ones. Write me and I'll see what I can do. There's not enough detail for me to answer you just yet.

How do I remove the cover?

cannot understand the question