Hi DanNSCAN!
yes, that is your star point in the winding. cut and seperate the 3 wires and solder on a flexible lead wire to each one. be sure to scrape or sand the wire to bare copper and use a little soldering paste on each to ensure a good bond with the solder. tape up each connection good.
you should have 9 leads on the stator, numbered 1-9. use a meter to find the circuit from lead #7 to the end of one of the wires from the star point and label it as lead #10. the circuit from lead #8 to one of the other star point wires will be #11. the circuit form lead #9 to the last star point wire will be #12.
you will now be able to connect the stator for 1 or 2 star, or 1 or 2 delta.

you may also want to try this connection for exceeding the voltage that you would normally get from 1 star. 1 star would normally yield the highest voltage from the winding, but i think this will increase the voltage by approx 25% at any given speed.
i have not tried it yet myself, and think it will cause the genny to hit charge voltage to soon before the prop has sufficient torque so as not to stall. but if someone is considering using the genny for heating elements to heat water, it may allow you to be able to use standard 115volt or 230 volt elements. it is a cheater connection i used years ago to be able to run 460 volt windings from 575 volt 3 phase. i had to call it something, so i called it an "extended" delta connection.
extended delta: output leads: 1, 2, and 3
connect together: 4+7+12, 5+8+10, 6+9+11
your last photos of your stator did not allow me to get a close enough view to see your coil spans. without that, i can not tell you the exact width your mag pole should be. but you could use the same width as 7 stator teeth. it will be close enough.
hope this helps, have fun!
zubbly