Engine Mechanical System: General Description: Warning

When working on the fuel lines, place "NO OPEN FLAMES" signs near the working area.
Metallic sodium is encapsulated in the exhaust valve. Metallic sodium is a strong alkaline material and thus prone to serious chemical reaction. When handling or disposing of the valve, be sure to confirm "DISPOSAL". Ref. to MECHANICAL (H4DO)>CYLINDER HEAD>DISPOSAL .