What about the waste oil from the air pipe of the valve cover of the scooter?

It needs to be solved through maintenance.

The causes of oil leakage in the vent hole of scooter valve cover are as follows:

1. There is too much oil in the engine. Replace or drain a certain amount of oil to make the oil capacity in the engine normal.

2. The piston ring wear causes the exhaust under the compression chamber, and the discharged high-temperature gas evaporates the engine oil and then escapes the engine oil gas. It is normal to replace the piston ring.