That is the same generator that I had in my previous MH. I had to lower my generator down with a floor jack to work on it. Yes the coil is located outside of the flywheel. That is really a Briggs and Stratton Vanguard motor so those parts are readily available. The hardsest thing to taking off the cowling is the area around the carb because of the governor linkage and hoses. I had to take several digital pictures and mark the adjustments with a Sharpie before I took it off. One major problem I had is that there is a very small rubber tube that comes in vertically to a small brass tube on top of the carb. That brass tube broke off when I tried to remove the old stuck on hose. It left part of the threaded tube in the carb. They do not make that carb anymore. I managed to get out the piece stuck in the carb and there was a enough thread left on the tube to thread it back in. Wow, was I worried. So be very, very careful. If you email me at email@example.com
I will send you .pdf workshop manual for that generator series.