just saw a chart showing high output alternator standard on the F20 and F15C 4-stroke yamahas. optional on the 6 and 8hp. Nothing indicated for the 9.9hp or 4hp. don't know why.
Floydo,
Yamaha makes a high Thrust 4 Stroke motor called a T8 One of the best motors for kickers out there.Here is the specs.They do have an alternater.Hope this helps.
