Robust and reliable engine with cast iron cylinder liner and valve guides and a high-strength crankshaft to ensure long life. The famous Honda Oil Alert system, by signaling the insufficient oil level in the engine, protects it from seizures. The valves and their seats are made of sintered material, highly resistant to high temperatures and wear. Mechanically sealed pump: the impeller-wear plate and scroll assembly is built with a special steel/chrome alloy, particularly resistant to wear