Engine oil seals for Honda Dio, ZX scooters are rubber seals on the shafts. They keep oil from leaking out and air and dirt from getting in.
Replace them if oil is seeping, the crankcase has lost its seal, or the engine runs unevenly at idle. Oil seals are installed during an engine repair.
- Before assembly, clean and inspect the mating surfaces.
- Lubricate the moving parts with engine oil and break in the engine at moderate rpm.
