polaris oil injection switch to premix?

whats up guys

I have an 89 polaris trail boss 250 2 stroke.. ive been posting a lot on here.. everyone is very handy and helping me with a lot of problems i have been having.

I wanted to explain, on my quad i have two different compartments. One is the gas tank and there is another one beside the gas tank that is for oil.. My quad takes fuel and oil in two different compartments. So, ive been researching and most say that premix is the way to go. I wanted to know how to go about switching the oil tube that goes from the compartment to the crankcase? (im not sure if thats what it goes to)

When i go to start my quad it starts up and eerything but then idles out after 3 seconds.. Ive done a rebuild on the carb and tried again before switching anything else and still didn’t work.. So i even went further and I replaced the carb with a new one.. and still doesnt work so im trying to see if maybe the quad is not getting enough oil?

would love for your feedback,