As when any item with the electric bike is no different, because people do not read of the manual and leave already walking and this causes some problems.
It is common to place a larger or smaller amount of oil in the mixed gas in an electric bicycle that two-stroke engine. Some cases, the person poses no oil and the result will be a damaged bike.
When buying electric bicycle, the owner violates the procedures so that the electric motor is softened and this should be followed by 500 km in both the electric two-stroke engine as in the four-stroke.
Riding the bike in the wrong way will also compromise the durability of the bike, but also the safety of the user. The electric motor can crash or be damaged due to a regulation made improperly in carburizing or because it was removed from the total way or changed the exhaust system of the electric bicycle.