---

It looks like this is a fuel injected motor, so the best guess is gummed up fuel injectors and / or filters from letting it sit for two months, possibly combined with the old fuel. If you let the boat sit for that long, you really need to winterize it before you put it away - at a minimum, use a fuel stabilizer. Add the stabilizer your last time out so it gets all through the fuel system - just dumping it into the tank won't help much.

At this point, if you want to tackle it yourself, I would do the following:

- change all fuel filters and test
- clean or replace fuel injectors and test
- test fuel pump(s)

No offense, but from your post it does not sound like you have a lot of experience working on motors, so finding a good mechanic may be your best bet. Good luck!