99101-ZV5-1000 Main (#100) Jet - Overview. The 99101-ZV5-1000 Main (#100) Jet is an essential carburetor component within Honda marine engine fuel systems. This precise jet controls the flow of fuel at higher throttle openings, ensuring the correct air-fuel mixture for optimal engine performance and reliability. Compatible specifically with Honda carburetor systems, it supports smooth engine operation and efficient fuel delivery. Designed as a genuine OEM part, it ensures seamless integration wi