You will need to get the flywheel off, to inspect the ignition system. The flywheel is held on with a special nut and has a tapered hole that wedges itself onto the crank shaft. It won’t just easily lift off. What kind of access to tools do you have? That would be good to know, so we can tell you how to do it, based on what you have available. In addition to regular mechanic’s hand tools, you’ll need at the very least, a large adjustable wrench or Channel lock pliers (for the special flywheel nut) and a flywheel puller or at least, a “vibration dampener puller,” which you can get at any Harbor Freight store.

Magneto ignition depends upon coil, points, condenser, wire, spark plug. Inspect and repair/renew as required. KF5 and later models in series are not the ideal first project outboard if they have an issue that requires more than minor service. As with any old outboard replacing the rubber impeller is a given.

Good Luck

Louis

Maybe you can get somebody to hold it for you. You can make a strap wrench out of an old belt, too. I don’t know how, exactly. Maybe that can be googled too?