I'm not sure the model number. The only numbers I see is the serial number, and the engine size number. I'm new to outboard motors, I work on diesel engines so I'm fairly mechanical, but I'm a bit stumped on this. So it was originally a two line system. When it started having the problem I found a thread that said the tanks go bad after a while and they can be a pain to fix, or you can't find the parts anymore. They recommended switching it to the 1 line system with the fuel pump. I did that, but it's still having the same issue. As long as I manually squeeze the ball and force fuel in it will run, but it won't draw fuel on its own.