Proper lubrication is necessary for good performance.
Electric starters get em going a whole lot quicker.
Over time, too much ethanol will start screwing up all sorts of things.
The ones that are the most fun are usually the most dangerous.
You can spend a small fortune buying fancy parts for it, but it could still blow up and leave you disappointed at any moment.
A 50 year old Briggs can run just as hard (if not harder) than a shiny new predator.
If there's no spark, it's not going to get going no matter what you do.