what oil ratio

[vislaguy]

I just got my son a eton 90 with some engine mods and the old owner made it direct mix but could not remember wht ratio> i will be using pump gas (supreme) and yamalube oil anyone have a starting point??

[jrohner]

I always mix everything at 32:1, except my snowmobile (MXZx 440) which I mix at 40:1.

[wilkin250r]

Oil premix ratios are a funny thing, some people get really weird about it.

The most common ratios are 32:1, and 40:1, but you'll find people that run everything from 20:1 to as thin as 80:1. I don't know about the Eton specifically, but from what I know of most injection systems, they're generally pretty heavy on oil, like around 20:1.

But you'll almost never go wrong with 32:1. It's a good, all-around ratio.