Here's a trick I've been using for the past 60-something years to figure out non-standard belt sizes. Find a junk belt that's too long, and cut it. Wrap the belt around the pulleys with the adjustment slot almost, but not quite at its minimum point. Cut the excess belt off so the ends will butt at that point, drill a couple of holes and splice it together with a piece of mechanic's wire. (Baling wire to you farm boys!) Now, go to the local parts store, find the gray haired old guy who knows how to use a belt measuring tool (not the keyboard commando kid who's too busy texting and picking his nose to notice you're standing there) and buy the same size belt as your patched-together one.
Jerry
