Hi all... thanks in advance for any help you can offer!<br /><br />My father just bought an old boat with a 1972 Johnson 50HP outboard on it. It wasn't running when he bought it... but he changed the plugs and battery and it started right up. The previous owner said it hadn't been running for a few years. My dad didn't even change the old gas 
<br /><br />Anyway, in neutral it will rev up clean all the way; but in gear is a different story. Throttle response is perfect, and the boat runs mint until what I'm guessing is about half power, then just stops accellerating... ? <br /><br />I've never tinkered with an outboard... but I've worked on carbs on bikes. Is it at all the same? Could this be simply a clogged main jet?<br /><br />Is cleaning a carb on an outboard harder for any reason? I'm good with a wrench, but I don't know where to start! I've only worked on 4 stroke aswell.<br /><br />Thanks again for any assistance you can offer.<br /><br />-Rob
<br /><br />Anyway, in neutral it will rev up clean all the way; but in gear is a different story. Throttle response is perfect, and the boat runs mint until what I'm guessing is about half power, then just stops accellerating... ? <br /><br />I've never tinkered with an outboard... but I've worked on carbs on bikes. Is it at all the same? Could this be simply a clogged main jet?<br /><br />Is cleaning a carb on an outboard harder for any reason? I'm good with a wrench, but I don't know where to start! I've only worked on 4 stroke aswell.<br /><br />Thanks again for any assistance you can offer.<br /><br />-Rob