a vertical drive shaft lawn edger is disclosed having a non - integral flywheel with the edger engine . this allows for the interchangeability of different flywheels for the same engine or different engines . the flywheel disclosed is preferably a combination flywheel / drive pulley . the flywheel / drive pulley is mounted directly to the drive shaft of the engine . the drive pulley is mounted to the top side or bottom side of the flywheel . preferably , the flywheel / drive pulley in an integral piece .