Gallacher, who won the title six years ago, made the better start to win the opening frame without Sharav potting a ball.
But, despite being ahead three times in the match, Gallacher could not stretch his lead to more than one frame and lost out in a close sixth frame to take the match to a decider. Despite chances for both players, Sharav held his nerve to win the last frame comfortably.
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Hide AdTonight, Edinburgh's Stuart Johnstone will aim to build on some recent good form against Perth 17-year-old Scott Donaldson for a chance to play Sharav.
The match commences at 7.00pm at The Matchroom in the Edinburgh Corn Exchange.