17937-ZV1-000 Return Spring - Overview. The 17937-ZV1-000 Return Spring is a critical component designed specifically for Honda marine engine systems. This high-quality OEM part supports the rigging system, providing the necessary tension for various return mechanisms within throttle or control assemblies. By ensuring proper mechanical motion and response, it helps maintain the reliable operation of your marine equipment. Engineered to match Honda factory specifications with exact dimensions and