Respectfully, are you sure the model # is "7014" from 'B&D'?
Acknowledging that I'm am not the 'all seeing wizard from Oz', I don't recall the '7014 'series as you mention.
However, I do remember the older '7104' model line from years ago i.e. vintage.
Does it look something like any of these?
https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2499334.m570.l1313.TR0.TRC0.H0.X7104+drill.TRS0&_nkw=7104+drill&_sacat=122827
If so, I don't believe that there is a reverse function on these drills.
Best wishes ;-)