Hi. This motor can easily be changed from 415-440 Wye (or Y) connection to Delta 208-230V. Just look at google photos for determining which pairs of wires need to be joined. Hint: in Y mode, there are 3 single wires to be connected to the supply, with the other 3 connected each other only.
Another hint: very often the terminal arrangements are pasted on the INSIDE of the terminal box lid - and you are worrying much more than necessary
I'm a bit puzzled by the "9 wire" comment. There are three sets of coils with two ends each in the motor - that makes 6. Or did you count the 3 wires for the power GOING IN?
Also, your pump motor may only have 3 wires in the terminal box. If so, the other 3 are joined to each other internally, which means you may need to open up the motor and find that soldered or welded joint, to bring those 3 wires out into the junction box too. Sometimes that is very easy (in fact I have seen that joint made and hidden INSIDE the junction box - which makes it very easy.
On the other hand, if there are already 3 pairs of wires terminated in the terminal box, and the motor labelled 400/414/440V, then it is already in delta mode - and that is the lowest voltage it will provide the maximum power. SO you might be stuck. However, it is still worth trying that motor on 220V 3-phase, because you may not NEED the rated motor power to pump what you need. Never give up too easily
I've converted loads of motors that others had given up on.... If you need more detailed help, take a nice sharp photo of the terminal box with the lid off both motors.
If finding the "star point" joint inside the motor is required, don't despair: take that motor apart and show us a few photos of the stator end with all the insulating sleeves. Chances are high that I can find it for you in a photo.