Yep, sure is Brian. However it is not for the feint hearted. The headlight needs to be removed to do this and subsequently disassembled by taking the removable section from the back of the light.
Inside you will find an adjustment screw, which, incidentally, is a 7 mm screw (yes rare as rocking horse shit, that size). Look at the logistics and turn the screw according to your needs. Note down how many turns (or half turns) and in which direction you screwed it.
Reassemble, fit to the bike and wait for a darkness to arrive on which to test it.
Many years ago, I stripped this 7 mm thread while riding on dirt roads. Had to buy a helicoil kit for it to repair said thread. I had fun on the dirt though...