Yamaha - Gear - Lower Unit Gear Component - 61A-45560-03-00

Overview

When you’re dealing with a worn forward gear, it’s one of those issues that shows up fast—slipping under load, rough engagement, or that uneasy feeling when you throttle up. This gear is a key part of how your outboard transfers power cleanly through the lower unit. It’s built to take constant pressure and keep everything turning in sync, especially on bigger motors where torque really matters. Replacing it during a rebuild can bring back that solid, confident push you expect every time you put the boat in gear.

Key Features

• Forward Drive Gear Function – Plays a central role in transferring engine power to the propeller during forward operation.

• Precision Gear Tooth Design – Engineered for smooth meshing with mating gears to reduce noise and wear.

• Heavy Load Capability – Built to handle high torque applications common in larger Yamaha outboards.

• OEM Fit and Balance – Designed to align correctly within the gearcase for proper rotation and longevity.

Engine & Boat Compatibility

Compatible with select Yamaha outboard lower units, commonly found in larger horsepower V6 applications. Always confirm fitment using your engine model and service manual.

FAQ

Q: What happens when this gear starts to fail?
A: You’ll usually notice slipping in forward gear, grinding noises, or inconsistent power delivery.

Q: Is this a forward or reverse gear?
A: This is typically used as a forward drive gear within the lower unit assembly.

Q: Can worn gears damage other parts in the lower unit?
A: Yes, damaged gear teeth can affect bearings, shafts, and other gears if not addressed early.

Q: Should I replace this during a full lower unit rebuild?
A: Absolutely—gears are usually replaced as a set or inspected closely to prevent uneven wear.

Q: What kind of maintenance helps extend gear life?
A: Regular gear oil changes and checking for water intrusion are the biggest factors in preventing wear.

• Supersessions
  61A-45560-02-00