Global maintenanceClean, adjust, inflate and smear. This is the basic maintenance protocol for a conventional bicycle that applies to an electric bike. It is very important, Check the bike after use to extend the lifespan of the components. We recommend that you carefully follow the following instructions:1. Clean You all areas of the bicycle with rags, paper and water moistened with soap and water, but not with caustic products such as alcohol or turpentine. An air compressor can be very useful. 2. Check the Condition of the wheels or tires on cuts, Cracks or crusted objects such as stones, glass or stick. 3. Brake Should the coverings have close to the window, but do not touch it. If the brake lever is operated with little force, the brake should work immediately. The coverings must be perfectly set to avoid noises and uneven brakes. 4. The cabling must not be too stiff, because in the event of temperature and usage changes, the material expands and can detach itself up to the break if the force is excessive. 5. Make sure that the Chain Runs smoothly outside of their mechanism. 6. Due to the vibrations occurring during use, we have to regularly Check the firm seat of the screws and bolts, mainly on the wheels, on the saddle and on the handlebar. 7. Grease them The bottom bracket and wheel hubs. 8. No passengers and no heavy objects ( Sable of the luggage rack: a maximum of 27 kg) with you because they can damage the battery and the engine. Do not use water under pressure.Battery expectationAll Legend eBikes Electric bicycles are with Lithium batteries operated. To charge the battery, put the charger into the socket. You will find that the control lamp on the charger lights up green to indicate that the device works properly. Need except charging These batteries no further maintenance. In order to extend the lifespan of the battery, they do not store the bike in places where the temperature may fall below zero degrees or can exceed 50 ° C.To maximize the battery lifetry to keep these tips: 1. Don't wait until the battery is completely empty before you charge it. Remember that the more you charge your battery, the higher the performance you draw from it. 2. Keep the battery 50 % of its load. 3. Store it in a cool, dry place and charge it at least every two months. 4. Make sure not to unload the battery completely over a long time or to store them in a fully loaded manner. 5. Hold the battery half loaded if you do not use your smart ebike for a long time. 6. Due to the natural self-discharge of lithium-ion cells, you should check the loading status every 2 months and charge for 30 minutes.Engine maintenanceTo optimize the engine output, please follow the instructions below: 1. Avoid the idle of the engine and try to support the engine with the power of your legs. This prevents the engine and/or the battery from overheating. 2. When it rains, the bike should not be used on floors on which the water level covers the engine.Electrical maintenanceThe controller is installed within the frame near the folding area. It is very important to consider the following points: 1. Do not dive into water. 2. Tap or open it.Note: If water penetrates the control unit, switch off the main stream immediately and drive without electrical support until you are sure that it is dry. Then you can turn on the pedal support system. Don't try to open the controller box. Any attempt to modify or adapt it is not covered by the guarantee. Ask your dealer or the legend service for help.