The Toro 92-6686 Lawn Tractor Pulley-Hydro Trans is a key component designed to ensure smooth power transfer from the engine to the hydrostatic transmission, enabling efficient movement and reliable performance of your lawn tractor. This pulley works by guiding and maintaining proper tension on the drive belt, which is essential for consistent operation and reduced wear on related parts. Built for dependable functionality, it helps keep the tractor running smoothly during regular mowing and heavy-duty tasks.