use 10# test line or heavier. use 3\8 oz lure or heavier. set magnetic control to "5". tighten small silver knob under the reel handle down until the spool will not turn when you push the thumb bar. loosen the same silver knob while you have the thumb bar pushed and adjust the knob tension so that the spool stops turning when the bait hits the ground. this is basic tuning for any baitcasting reel.
Remove the left side plate and set the little plastic things ( I think they are yellow) so they are against the inside..they should kinda snap inwards and stay there...
Found a video ( not well made but it shows how to access the brake system).. you will see the SIX little yellow plastic brake adjusters... start with moving FOUR (4) - opposites of each other - of them inwards towards the spool shaft.. they should "click" inwards and stay there...CAST carefully the next time.
.. how to access brakes on abu garcia orra sx and revo lp baitcast reels
those are your magnetic cast control. it is a magnetic braking system. i suggest setting it at "5" and dont adjust unless you are casting into the wind, if that is the case turn it up to towards maximum and keep your casts low to the water and use heavy baits. its a great tool to help eliminate backlash.