For the durable life of the tool and for securing the object in the minimum length of the belt, please don't pull the belt by violence.
Scooter pulley.
Flywheel, special tools, such as de-wear Katorijjioirufiruta.
Capacity: 60mm-120mm
Motorcycle Adjustable Flywheel Pulley Holder ~ Adjusting Hole (60 -120mm)