Not familiar with that kind of motor, so don't laugh.................There's 4 blades on that cooling fan that look like a cast aluminum insert where rusty iron blades were missing. What's that all about?
About that electric start................No way I'd toss an existing toothed flywheel like that one just to get one that has 4 charging poles to run lights and isn't available in a toothed electric start version. The only reason I don't have electric start from the factory or aftermarket is because my flywheel has to be from a billet, so it won't explode at the rpm's it's planned to spin. That's not available to me with teeth.