2022 Yamaha 15HP Portable Motor – YM604 The powerful 15HP Yamaha, new twin-cylinder SOHC design boasts the largest displacement in its class. Maintenance is a breeze with easily accessible oil and fuel system components. Convenient front-mounted controls facilitate smooth shifting, easy, shallow water drive and single action steering friction adjustment. * While every reasonable effort is made to ensure the accuracy of this information, we are not responsible for any errors or omissions contained on these pages. Please verify any information in question with PIRATE COVE MARINA.