How to put it on a timing marks

@francislna63166 we need the exact year, exact model, exact engine size. Then we need to know what you are trying to achieve? I assume you are taking about setting the ignition timing. Why do you think that needs to be done? What are the issues with your MB? What have you checked? Have you had a chance to scan the OBDII yet? That should always be the first step. That will give you an idea of where to start your troubleshooting.