How tight should the belts on a Workman II 250 be, and how do I adjust them?

The Workman II 250 uses two belts, one inside the canopy and one in the arm, and each should deflect 1/4 to 3/8 in. First stop the engine and pull the spark plug wire (or unplug an electric model). To tighten the canopy belt, slacken the bolts holding the motor mount plate, let the plate slide down the frame, then tighten the bolts again. To tighten the arm belt, slacken the four gearbox nuts, turn the adjuster bolt, then retighten. Belts stretch the most early on, so check them often. Keep the engine pulley and drive pulley aligned, or the belt will twist and break.