Yamaha - Starting Motor Gear Assembly Starter System Component 6CB-81807-00-00. Overview. The Yamaha Starting Motor Gear Assembly 6CB-81807-00-00 is a vital component in the starter system, responsible for transferring power from the starter motor to the engine during ignition. This gear engages with the flywheel to crank the engine, allowing it to start smoothly and reliably. If the gear becomes worn or damaged, you may experience grinding noises, slipping, or difficulty starting the engine. Replacing it helps restore dependable starting performance and protects the starter system from further wear.. Key Features. • Reliable Engine Cranking - Transfers power from the starter motor to the engine for smooth ignition.. • OEM Fit Precision - Manufactured to Yamaha specifications for proper alignment and engagement.. • Improves Starting Performance - Helps eliminate slipping or grinding during startup.. • Durable Construction - Built to withstand repeated engagement and harsh marine condit