This flagship engine was engineered with OEM and user feedback to meet special power and performance demands. The toughness and strength of the FH KAI model come from hemispherical combustion chambers with V-valve technology. They provide extraordinarily won’t-quit muscle for riding and push mowers. The FH770D KAI engine has the power to tame tough landscapes. This engine is made with unique air filter options, advanced lubrication system design, and enhancements for optimal startability.