Yamaha Outboard - LF300ECB. 35-Inch Shaft Counter Rotation Digital Electronic Control (DEC) Electric Start Power Trim & Tilt EFI with Variable Camshaft Timing Gray. The Yamaha Outboard - LF300ECB is engineered for offshore vessels that require maximum propeller depth, precise handling, and the power to take on rough seas. The counter-rotation design balances steering torque in multi-engine setups, while the 35-inch shaft offers optimal performance for tall transoms and deep-water applications..