Servicing a ReplacementBatteryThe original battery is maintenance-free and does notrequire service. For servicing a replacement battery,refer to the battery manufacturer’s instructions.Drive SystemMaintenanceChecking the Tire PressureService Interval: Before each use or dailyEvery 25 hours—Check tire pressure.Maintain the air pressure in the tires as specified.Check the pressure at the valve stem (Figure 29).Check the tires when they are cold to get the mostaccurate pressure reading.Inflate the tires to 97 kPa (14 psi).g000554Figure 291. Valve stem23