Yamaha - Gear 2 - Lower Unit Gear Component - 61H-45571-01-00

Overview

When you’re dealing with worn gears inside the lower unit, it doesn’t take long before shifting gets rough or power delivery starts slipping. This gear plays a key role in keeping everything turning smoothly under load, especially when you’re moving between speeds or putting the motor to work. It’s one of those parts you don’t see often, but you definitely feel when it’s not doing its job right. Replacing it helps bring back that solid, dependable engagement you expect out on the water.

Key Features

• Precision-Cut Gear Teeth – Designed to maintain smooth contact and reduce wear during operation.

• Consistent Power Transfer – Helps deliver steady torque through the lower unit without slipping.

• Durable Internal Component – Built to handle constant rotation, load, and marine conditions.

• OEM-Spec Fitment – Matches original Yamaha design for proper alignment within the gearcase.

Engine & Boat Compatibility

Compatible with select Yamaha outboard lower units requiring 61H-45571-01-00. Always confirm compatibility with your specific engine model and gearcase configuration.

FAQ

Q: What are signs this gear needs to be replaced?
A: Grinding noises, slipping under load, or difficulty maintaining speed can point to worn or damaged gear teeth.

Q: Can I replace just this gear instead of the whole lower unit?
A: Yes, but it requires disassembling the lower unit, so it’s typically done during a full rebuild.

Q: Does this gear affect shifting performance?
A: It can—especially if the teeth are worn or chipped, which can lead to rough or inconsistent engagement.

Q: Should I replace other gears at the same time?
A: It’s often recommended to inspect and replace related gears or bearings to ensure balanced wear.

Q: Is lubrication important for this part?
A: Absolutely. Proper gear oil levels and regular changes are critical to prevent premature wear.

• Supersessions
  61H-45571-00-00