16130-ZW2-H01 Auto Bystarter - Overview. The 16130-ZW2-H01 Auto Bystarter is an essential component in Honda marine engine systems. This part functions as an automatic bystarter that enriches the fuel mixture during cold starts to facilitate smooth engine ignition and reliable operation. Designed specifically for Honda outboard motors such as the 4T BF25D and BF30D carburetor series, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Feature