Excessive belt wear, vibration and noise may be the cause of poorly aligned or loose pulleys.
Check alignment by placing a straight edge across the faces of the two pulleys. If necessary
adjust the motor pulley by loosening the allen screw locking the pulley onto the shaft. If you
cannot get the pulleys to align it may be because the shafts are not in line. Loosen the motor
mounting bolts and shift the motor until you get the required results. Position the pulley as near
as possible to the motor bearing. If it is set too far along the motor shaft it will put unnecessary
strain on the shaft and bearings.
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