no it isn't new. actually before the new carb and air filter it was nearly impossible to turn. we checked the piston today and it appears to be functioning well. it moves freely--no scratches or deposits on it. actually it looks quite nice for it's age.
btw, this is a puch maxi mkII sport.
im not very clear on how to work with the drive belt or crankshaft. do you know of any good guides on working with this. im very new with moped repairs.