399 Rotax

[jlemon]

I bought a mid 70's Argo last week and it has a 399 Rotax in it. I did see it says Bombardier on it. The guy I got it from said he wasn't sure what the mixture should be but he's been mixing at 28:1. Does that sound right?

[patb069]

I bought a mid 70's Argo last week and it has a 399 Rotax in it. I did see it says Bombardier on it. The guy I got it from said he wasn't sure what the mixture should be but he's been mixing at 28:1. Does that sound right?

If he is not using Synthetic that sounds about right. If you are using synthetic go to about 40 to 1

[jlemon]

Thanks for the info.