[. . . ] Warranty Information The MVVS Company gives 36-month warranty applying to manufacture and material defects of the electric motors. Damages due to intaking foreign objects or substances, such as water, chemicals, dust, etc. Damages due to incorrect use, such as application of incorrect supply voltage. [. . . ] When operating models, follow regulations and laws effective in your country. The manufacturer is not responsible for possible damages caused by operation of models and devices driven by the MVVS motors. Immediately replace damaged propellers or propellers that touched the ground!Never stand so that parts of your body are in the plane with the rotating propeller. Never wear loose drifty clothing (tie, scarf, etc) when operating the model. Keep all small objects in the safe distance from the running motor and never throw any objects into it. When operating the motor, pay attention to keep possible bystanders, especially children, at least 10 m away. Never rectify the axis bent during an accident but provide its replacement. Do not start the motor immediately after an accident but check it first. The contaminated motor should be delivered to the manufacturer for repair. Motor Maintenance AC electric motors are not maintenance-demanding. The same applies to MVVS motors as well, as maintenance only involves keeping the motor in dry and clean condition. If no accident happens, motor service life is only limited by lifetime of bearings in hundreds of hours, depending on flying style and loading. We recommend entrusting the manufacturer with replacement of bearings. If you decide to replace parts by yourselves, then always use original parts and MVVS tools only. Note Screws used for motor installation can be loosened using the Torx 9 spanner. Never wipe off this material to make possible next disassembly. Motor Installation into a model Drill a central hole 13mm in diameter and other holes for motor screws according to the sketch into the motor bulkhead in the model nose, unless already provided by the manufacturer. [. . . ] In case the used controller is fitted with connectors of different diameters, or its female connectors do not adhere firmly to the motor connectors, replace them with those supplied as motor accessories. Use of incorrect connectors may cause damage to the motor and controller. Replace any two supply cables if the motor rotates in the opposite direction. [. . . ]