As its been sitting for awhile, I’d change out the engine, trans, front and rear end oils.
Won’t hurt to replace the brake fluid. Grease all the fittings and the wheel bearings.
Replace the battery if needed and clean up the battery cables.
Check that the air filter is clean.
That should get you ready to give it a shakedown ride to find any other issues.
I maintain two 2014 ACE 570s and so far no major issues.
Good luck.
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