Inspect for the following:
| • | Dirt or debris |
| • | Damaged seal surfaces |
| • | Inspect O-rings for damage, replace as required |
| • | Restrictions within the positive crankcase ventilation (PCV) tubes of the upper tank (1) |
| • | A dirty or restricted baffle (2) |
| • | A dirty or restricted tube (3) |
| • | Plugged or damaged screen (1) |
| • | Broken locking tabs (2) |