After 3-4 months of normal use, unscrew the oil filler port and observe whether there is oil coming out of the gear when the product is running. If not, you can add ordinary engine oil for diesel vehicles, adding 15-20 ml each time. Do not fill it too full to prevent oil spillage.
By vevor
The screw with the "red dot" in the middle of this product is the oil filler. The red dot is a sealing ring to prevent oil leakage during transportation. When in use, prick the red dot with a needle to allow the body to breathe and lower the machine temperature. The new machine has already been filled with engine oil, no need to add more.
By vevor
