Hello this boat motor i have been working on and off for 2 years and it is not right.. My outboard engine running. Yamaha f150jb outboard motor price: click for options msrp: $16, 470.00 type: outboard motor year: current series: four stroke jet drive hp: 150 engine type: 4 cylinder. Hi, i'm new to this forum but hopefully someone can help me with my problem. i have a 2005 20'6" sea pro with a yamaha 150 4 stroke. it has been sitting with a full.