DRIVEGEAR FLYMO RL550 HITECH?

MY FLYMO RL550 IS MISSING LEVERS, OR CABLES, AND I CANT GET ANY INFO ON HOW TO REPAIR THE DRIVE MECHINISM. BOUGHT THE MOWER THIS WAY, NEED PICTURE OR DIAGRAM OF THIS MOWER THE WAY IT LOOKED FROM THE FACTORY. IT IS A REAR BAGGER, WITH A VERY STRANGE HIEGHT ADJUSTMENT. IT SAYS POWERDRIVE 5.0 HITECH. ANY INFO WOULD HELP ME. IM TIRED OF PUSHING, IM TO OLD, BUT THATS NO EXCUSE!!!! PLEASE HELP. THANK YOU---