Important: 
|    •  | Do not use the valve rocker arm cover gasket again. Install a NEW gasket during assembly. | 
 
|    •  | Remove the ignition coils before cleaning the cover in solvent. Do not submerge the ignition coils in solvent. | 
 
|    •  | Do not remove the oil fill tube from the covers, unless service is required. | 
 
- Inspect the oil fill tube (423) for a loose fit or damage.
 
- Inspect the covers for the following conditions:
 
| •  | Scoring or damage to the gasket surfaces | 
 
| •  | Ventilation system passages for restrictions | 
 
| •  | Threaded bolt holes for damage or debris |