Mercury - Guide Kit-Rope - 16839A2. The Mercury Guide Kit-Rope - 16839A2 is an essential OEM component designed to ensure reliable recoil starter operation on select Mercury outboards. With a factory-matched guide and rope assembly, this kit restores smooth manual starting and helps prevent snags or premature rope wear during engine cranking.. Key Features. OEM-Engineered Fit - Direct replacement designed to meet Mercury's exact performance standards. Pre-Assembled Kit - Includes starter rope an