Motor Specifications:     P-20 HP     P-15 HP     P-9.9 HP     P-8 HP     T-9.9 HP     T-8 HP      Motor Inventory:     New Motors     Used Motors     Non Current         Official Sites:     Yamaha Outboards   .............................................. Yamaha Portable Motors 9.9 HP Specifications:           Overview | Specifications | Features Model: F9.9hp   Displacement: 19.7 ci (323 cc)   RPM Range: 4500-5500   Alternator Output W.O.T: 10A   Compression Ratio: 9.19:1   Fuel/Induction System SOHC   Lubrication Wet Sump   Ignition System CDI   Starting System Manual or Electric   Shaft Length: 15 in., 20 in.   Gear Ratio: 13:27 (2.08)   C.A.R.B. Rating 2-Star   Weight 99 lb (45 kg)   Warranty 3 Year Limited Pleasure   Come visit our showroom and see for yourself why Northshore Marine is one of Texas' finest southwest dealer.