How To Purge Transaxei On Riding Mower?

How To Purge Transaxei On Riding Mower? After the engine is running, move throttle control to slow position. With motion control levers in neutral (N) position, slowly disengage clutch/brake pedal. Step 4-Move motion control levers to full forward position and hold for five (5) seconds. Move levers to full reverse position and hold for five