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40R is a rope start motor. The belt driven DC generator kit was for electric start models, meaning the rope start motor will have the wrong flywheel to drive the generator. Besides the flywheel and generator, you will need a voltage regulator and a bunch of other stuff. Simply put, it just isn't worth it here in U.S. and I suspect a lot worse in Turkey.
If it is electric start, then somebody has converted it. So the question remains, does the flywheel have the cogged belt drive in the center?
http://www.marineengine.com/parts/j...rt+40+Hp+Models&yid=34231&mid=34232&sid=35627