99101-ZF5-0850 Main (#85) Jet - Overview. The 99101-ZF5-0850 Main (#85) Jet is a critical component of the carburetor system in Honda marine engine systems. This OEM main jet regulates the primary fuel flow at higher throttle levels, ensuring optimal fuel delivery for sustained engine power and smooth operation. Manufactured to precise factory specifications, it integrates seamlessly with existing systems, maintaining both performance and durability in marine environments.. Key Features. Precise