Need advice on my pump

[Seriak]

I have a rio2100 currently running my skimmer. Now I know that Rio's are garbage and I will replace it when my money tree starts producing. However, my current problem is that when I turn the pump off, it will not come back on again. I have to play with the impeller or flip it this or that way and after 1/2 hour to an hour of playing, it will eventually come back on. Am I missing something here. Is there a sure way of getting it to start every time? And yes it is clear of all debris and runs great when it runs.

Thanks

Chris