【Science kit】4 IN 1 EDUCATIONAL MOTORIZED ROBOT KIT

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. Disassemble according to the reverse steps of the manual

2. The registration number of the separated parts, so as not to worry about changing the parts next time

3. After the disassembly is completed, another change can be assembled