I’m on the north side of 70 myself, so I know that these things can get confusing. The other problem we have, besides miscommunication, is we are thousand miles apart and can’t see what you are talking about. Let’s start with a few simple questions and take your concerns one step at a time. Please answer these question and with that info we can make a decision as to how to proceed.
1. Do you want help with getting the mini bike going, the engine running or both? If it is both we need to decide which one to tackle first and put the other on the back burner until the first is solved.
2. How much mechanical experience do you have? We need to know this so our answers are not more confusing to you and we eliminate as much miscommunication as possible. You must answer our questions with short simple answers, don’t add information you think we need. At times like this more info than needed can make things confusing on both sides.
3. If you have other questions, add them at the very end of your reply only. Never answer a question with a question, unless you don’t understand the question. I know that this may take longer to resolve the problem, but it makes everything a lot easier.
4. If you have a grandchild or trusted friend to teach you how to down size your pictures it would be very helpful. Remember what we learned decades ago. “Asking a stupid question makes us look smarter than making a dumb mistake “. At our age patience is our friend.