Yamaha - Shift Control Lever Gear Shifting Mechanism 6E9-42343-70-00. Overview. When shifting starts feeling sloppy or inconsistent, I usually start looking at the control side before tearing into the lower unit. This lever is what translates your hand movement into actual gear engagement, so it needs to be tight and responsive. I've seen worn levers cause hesitation or missed shifts, especially on older setups. When it's right, shifting feels clean, solid, and predictable every time.. Key Features. • Direct Shift Input Control - Transfers operator input into precise gear engagement.• Smooth Gear Transition Support - Helps ensure clean movement between forward, neutral, and reverse.• Durable Metal Construction - Built to handle repeated use and mechanical load.• Stable Linkage Alignment - Maintains proper positioning within the control system.• Exact Yamaha Fitment - Matches factory specifications for proper installation and operation.. Engine & Boat Compatibility. Designed for Yamaha