Mechanical and electronic function test. Checking all moving parts, wheel bearings, wheels, drive connection and freewheel. Adjustment and setting of all moving parts. Checking and, if necessary, calibrating set software parameters (e.g. speeds, acceleration, deceleration). Replacement of various wear parts. Technical cleaning of the wheel mechanics, cleaning of the trolley. Function test & performance test of battery with current performance data. Motor axles & testing of the motor. Function test of the charger. Repair of major paint damage. Issue of a service report.