buckwildnomnom

i can't find the pump or the motor i'm literally lost when it comes to this stuff

or can i do it with the hot tub full?

do I need to drain it before I do that?

Yo what it do Spa enthusiasts, I have a Leisure Bay Spa Hot tub at the new place im renting. It has been sitting unused for about a year and I just cleaned it out(it had a little dirty water in it and some leaves and dirt, but its pretty clean now). I re-filled it with water and turned on the main switch to turn the spa itself on. On the keypad I hit what i think what was the pump buttons but all i heard was what sounded like a motor trying to start and it just continued doing that. The display screen keeps flashing FLO. Is there anything I can do to get it going or fix it myself?