This listing is for a 1999 Yamaha 15HP 4 Stroke Carbureted Outboard Engine with a 20" Shaft. Model: F15ELHX Serial: 66M-L-??01176 Dry Weight: 126LBS. Compression is even across both cylinders @ 210PSI. Engines runs great and has no issues. Carbs Were just serviced. Electric Start, Manual Tilt & Tiller Steer