This is is the lot from the box, a picture obtained from the web. Sorry, no idea from where.
Here is how I placed it in the tank. Not how intended but I see no reason this would hinder it's use.
The water intake holes are on the bottom...
...and the back. By hanging it on the side these parts are as exposed as if it were hung on the back.
Here is a view with the bottom removed. The motor is revealed and you can just see a gree tube that connects to the top air-intact adjustment screw.
This is the motor pulled out and turned upside down. I didn't get a picture of inside from the bottom--very hard to get a good shot. By the way, this is not the green tube from the last picture.
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LanceWex @ GMAIL