This motor has the oil mixing system, i have read that It Is a controversial discussion if this is reliable or not, I personally don't like the idea this might fail someday with out notice and screw up the whole motor, I have seen some videos on YouTube of people bypassing the system but I wonder if I can just use mixed gas 50:1 and don't put any oil to the reservoir, will the motor be damaged? Or other thing I was thinking is use mixed gas in the main tank and fill the oil reservoir add well with mixed gas, could that work?
If you mix the fuel at a pint to 6 gallons of gas before the oil tank runs dry that ought to work.
I disabled my 2002 90 by unscrewing 3 screws holding the oil pump in place, temporarily removed the pump end of one hose.....to get the pump out, pulled the pump out, grabbed the drive gear and pulled it straight out accompanied by the shaft. Put the hose I removed back on, stuck the pump back where it was, installed the 3 screws and used that boat like that for years. I had oil left in the oil tank but it stayed there because the mechanism that pumps it out of the tank into the fuel line was disabled....never had a problem with that.
Be sure you do your premix BEFORE you disable the pump.
I am a senior citizen and my memory isn't as sharp as it once was so adjacent to the fuel tank fill port, I wrote on the gunwale of the boat, adjacent to that port the following: 1 pt. oil - 6 gal gas. Never forgot to put the oil in.