Yamaha - Gear, driven 2 - 6CB-11567-00-00Yamaha Driven Gear 2 Engine Gear Component 6CB 11567 00 00 Overview When internal gears start wearing out, it usually shows up as noise or a change in how the motor feels under load. This driven gear plays a key role in transferring motion through the engine, and when its off, everything downstream feels it. Ive seen these cause subtle issues at first that turn into bigger problems if ignored. Keeping a solid gear in place helps the engine stay smooth