My new money pit

[Tin-Can]

is it oil injected?  or mix in a 5 gal can?  ALWAYS buy NON oxygenated gas real gas only, Mercury 2 stroke oil only, add seafoam to every tank and life will be alot better.

I don't think it's oil injected but I'm not positive. The lady was awol from work so didn't have much time to spend with me so I was hoping I could get someone from here to meet up with me sometime somewhere to show me a few things that I can't figure out on my own. I'm not the smartest when it comes to mechanics or boats but I'm learning...unfortunately it's through breaking down

 The boat is a 1989 model..... right?  And I assume the motor is same year. That's 31 year old boat and motor. I don't believe that oil injected 2 stroke motors were built that long ago.  You will probably need to mix oil with the gas at a specific rate (of which I have no idea) 
Like MSM1970 said, ALWAYS use Non oxygenated gas, thats sold at most every Maverick station (and others) with "Blue" nozzles that means it has NO CORN derivative in it.  Regular gas now days has 10 to even 20 percent CORN additive. That gas in a motor that is carbureted (not fuel injected) will gum up the carburetor jets, floats, filters, etc. if allowed to sit for extended time (like over the winter). 

3 ways you can prevent that:
 1-  ALWAYS use Ethanol-Free in the boat (or in small gas equipment like lawn mowers, snow blowers, etc. that may sit unused for seasons)  
2.- In the boat especially, use a fuel additive (Sta-bil, Sea Foam, etc) and ONLY Mercury 2 stroke oil. 
3.- Since I imagine the boat has an under deck fuel tank that is piped to the motor by either solid stainless or silver rubber lines, there should be a petcock (shut off valve) in the gas line somewhere near the motor. When you are getting off water for the day, while the boat is on the trailer and secured, with the motor still in the water enough to draw cooling water, shut off the gas line. Then run motor  in Neutral until it stops (runs out of gas left in carburetor and line between valve and fuel pump) This will greatly reduce the possibility of gum up from sitting fuel.