The industry uses 14 volts DC as the standard for alternator output. So Ohm says 26.7 amps. Which is about right for an oil cooled permenant magnet AC generator. That's the same type my ST1100 used in 1994. Everyone toasted those eventually and upgraded to the 1996 aircooled unit that was rated at 560 watts.
DISCLAIMER: All observations made in this post are mine and based solely on my own anecdotal experiences, and may contain large doses of facetiousness. YMMV, of course. You are "on your own", and I take no responsibility if someone tries anything in this post and gets into trouble with the law, damages their person or property, or goes blind. Take everything you read or hear "anywhere" butt especially on the Web with a large dose of salt.