1, remove the oil tank to drain clean oil, cover the oil tank cover tightly with plastic sheets to prevent air leakage, and then pump air into the oil outlet to rise;

2. Clean the depression of the fuel tank, and then apply putty on it;

3. Put putty on it, dry it on it, and then spray primer;

4, spraying a topcoat after the primer is dried;

Finally, as long as the interface paint is sprayed, it is as good as ever.

When repairing, be sure to drain the oil in the tank. In order to avoid danger.