70hp 2 stroke premix question

[Dusky 13]

So I recently purchased a boat of a guy who took of the precision blend system and not runs the boat using premix method.. my question is what should the premix ration be 100:1 or 50:1? The motor has a little over 400 hrs on it just cant figure out what to use thanks for the feed back in advance.

[ausnoelm]

It beats me why people remove the auto oil system, but anyway, 50:1 for that motor.

[Dusky 13]

Thanks for the info 50:1 it is and i also have no idea why he did it

[greasyshaft]

It's an easy way of solving a problem for some people if you get what I mean.