From the v-drive:

Remove the two (2) plugs on the v-drive unit, one on the front on the port side, the other on the rear on the starboard side. Both plugs are pretty high up on the v-drive housing. A 7/16” closed end wrench fits perfectly on the square head plug. The front is a vent plug and you might not get any water out of it. Look for the wrench to see the location of the drain plug.
Front:


Back:


9) Remove and drain the water intake hose at the v-drive.