17928-ZV5-000 Assist Spring - Overview. The 17928-ZV5-000 Assist Spring is a vital component designed for Honda marine engine systems, particularly within the active marine and rigging accessories system group. This OEM spring plays a critical role in providing mechanical assistance and controlled tensioning that supports smooth operation of throttle or linkage mechanisms, helping maintain stable and reliable engine performance. By aligning perfectly with factory dimensions and tolerances, it en