1A4115 Push/Choke Key (1A) - Overview. The 1A4115 Push/Choke Key (1A) is an essential component within Honda marine engine systems. It plays a critical role in manually operating the choke mechanism, which is especially important for cold start conditions. Designed to ensure reliable choke functionality, this part supports smooth starting performance and helps maintain engine efficiency. Manufactured to meet strict OEM standards, it ensures seamless integration with existing equipment, maintaini