Seeing as this is likely an ingame set, I would suggest removing Return and Fire Blast. Heat Crash is a much better move ingame for Emboar, as it does good damage and goes off of Emboar's better Attack stat, as well as having a workable PP, a good thing for ingame.
Return is not needed due to your already having Strength. Return is the more powerful attack, however Strength is needed as an HM. So you don't have such similar coverage, you should get rid of Return. Instead, give your Emboar Brick Break or Low Sweep. Brick Break is more powerful yet Low Sweep can get your foe in the Speed range needed for you to hit first. Emboar is bulky enough to take a hit ingame, especially if you are overleveled, so Low Sweep would be a good option since Emboar is still slow (just by a bit) for ingame.
While the coverage of having Ground and Fighting repeats itself in most cases, Earthquake should still stay for those Poison type foes or anything else that hurts more from Ground (such as E4 Metagross) than Fighting. It is also incredibly useful for Double and Triple Battles.
You do not want the move Blast Burn on Emboar. For one thing it has that awful recharge the turn after use. For another it is a Special attack, and as said before Emboar is a physical Pokemon. Low PP and not 100% accuracy seal the deal and make Heat Crash the better choice for a Fire type attack.