I've recently purchased a 2018 burgman 400. It didn't come with a manual. I've found videos for access to the radiator. But, can't find anything for my model. Can someone help me to get to the radiator cap to check coolant level. The reservoir above the gas cap is empty. The bike only has 1000 miles on it. I sure don't want to run it with low coolant and overheat it.