Yamaha - Idler Gear 1 - Engine Geartrain Component - 6P2-15512-00-00

Overview

Inside the engine, idler gears don’t get much attention, but they play a big role in keeping everything turning the way it should. I’ve seen motors develop odd noises or timing issues that traced back to wear on a gear like this. When it’s in good shape, everything meshes quietly and runs smooth under load. It’s one of those parts you don’t notice—until something feels off.

Key Features

• Smooth Gear Engagement – Transfers motion cleanly between connected gear components.
• OEM Precision Machining – Built to Yamaha specifications for accurate fit and alignment.
• High-Load Durability – Designed to handle continuous engine stress and rotation.
• Noise Reduction Support – Helps maintain quiet and stable engine operation.

Engine & Boat Compatibility

Designed for Yamaha outboard engines utilizing internal gear-driven systems. Commonly used across a range of Yamaha outboards where precise gear timing and durability are essential.

FAQ

Q: What are signs this idler gear is worn out?
A: Unusual engine noise, vibration, or inconsistent performance under load.

Q: Can a worn idler gear affect other components?
A: Yes, it can increase wear on surrounding gears and impact overall timing.

Q: Is lubrication important for this gear?
A: Absolutely, proper lubrication is critical to prevent premature wear.

Q: Should I inspect other gears during replacement?
A: Yes, it’s best to check all mating gears for wear or damage.

Q: Is installation complex?
A: It typically requires internal engine access, so experience is recommended.