17935-ZV1-010 Throttle Shaft Stay - Overview. The 17935-ZV1-010 Throttle Shaft Stay is a critical component in Honda marine engine systems. This part stabilizes the throttle shaft and maintains proper alignment within the throttle mechanism to ensure smooth, reliable operation of the engine's throttle control. Designed exclusively for use with select Honda marine engines, the throttle shaft stay supports the mechanical operation of the throttle system, preventing unwanted movement and misalignme