"No inherent problems. Like e
"No inherent problems. Like everyone else, they used the 5.0L, 305 c.i. GM powerplant, coupled to their own outdrive. They no longer produce I/O engines but the parts, although always expensive, should be redily available.
Many of the common parts such as manifolds, water pumps, tune up parts etc. are available aftermarket, while you will need to get most drive system parts through your Yamaha dealer.
If you are looking at purchasing one I always recommend a professional evaluation of the vessel. As you can tell by reading many of the posts here, it will be money well spent.
Good luck
Rick"