Did research no luck. Unloader/bypass question

Was reading random threads about unloaders and this and that and read the way to set it up it have trigger pulled start machine and turn till slight srip w 0 degree nozzle on. Well i dont see on my pump where i would pull the bypass hose and watch the drip. Just curious what im missing? Can i onlt achieve that with an external bypass which is hat im thinking and if so where do i install it on this pump?

And somehing tells me i shouldnt do it this way lol Cat Unloader Ajustment - YouTube

My question isny how to adust an unloader. Its y i dont have the bypass hose…

Because that pump has a built-in bypass. The section directly under the unloader that goes to the inlet, is your bypass. It just doesn’t accomplish much.

Yea i found a tech article on cats website but wasnt 100% sure i couldnt add an external. Gonna buy an udor to keep on hand for when this cat takes a dump and will have the external on it then. Thanks