2 versions
1 the motor may have a adjustable arc,where you slacken the motor then push it inward now place the belt squarely on both pulleys now by levering the motor outwards you will tension the belt,you then tighten the bolts
2 the other version you STRETCH the belt on by putting the belt on the little pulley then feed the belt onto the large pulley their will come a point where the belt looks to small now we use gloves (sharp bits) grab and TURN the large pulley this will stretch the belt over the last bit into position
wirecutterman, July 2010