Honda BF15D3LH Outboard - 20" Shaft Manual Start 6A Charging Tiller Silver. Overview. The BF15D3LH is a long-shaft 15 HP outboard built for boaters who want a taller-transom fit without turning the engine into a complicated electrical project. With a 20" shaft, it's sized for skiffs, utility boats, and many aluminum fishing boats that sit higher at the transom-where a short shaft can ventilate or feel inconsistent in chop.. This model keeps things refreshingly straightforward: manual start, till