The air tightness and lubricity of ordinary lubricating oil are not as good as those of the original formula special oil, so it is not recommended to use it!
Please contact our original customer service for supplementary parts! (May be charged for spare parts)

Please confirm the battery level, whether the battery is installed correctly, and whether the shrapnel is installed backwards. If the shrapnel is not in good contact with the battery, it will not be able to start without power.

Please check whether the order of the gear combinations in the gearbox is wrong or reversed according to the instructions.

Usually the operation is not smooth because the burrs are not trimmed cleanly. Check whether the burrs of the parts are completely cut according to the instructions.

You can contact our online customer service for supplementary matters

1. Check whether there are burrs that affect the action when cutting the part board. The joystick is composed of many satellite gears. If there is a burr, it will affect all the gears without action.

2. It is impossible to cut too many parts or too few parts, and then please cut according to the indication.

3 Refer to the manual, the assembly parts have direction, if the direction is wrong, it will affect the action.

1. Please refer to the manual to confirm whether the P15 round shaft and P17 hexagonal shaft are installed correctly? Please note that the hexagonal shaft is a driving gear and the function of the auxiliary gear of the round shaft is different

2. Please refer to the instruction manual to confirm whether the P11 bushing is properly installed. Forgetting to install the bushing will affect the operation.

1. Using a motor to drive the satellite gear will make a lot of noise. Lubricate the place indicated by the manual to reduce the operating sound slightly.

2. Are the parts P20 gaskets installed? The gaskets are also a good helper to reduce the vibration and abnormal noise during operation.