Yamaha 15hp old dual fuel mix ratio?

[keltfisher]

I have an old (1970's??) Yamaha 15hp outboard that is dual fuel! Apparently you started of on petrol then went to, or mixed with kero or parafin. This true, there are two fuel inlets. I will just run on petrol, anyone know what oil/fuel mix ratio to use. There is no I.D plate on the engine so not much info. Thanks

 

[deejaycee_2000]

Re: Yamaha 15hp old dual fuel mix ratio?

run it on petrol only mixed 50:1 ...... I've never heard of a 2-stroke that is duel fuel, my old massey furgason tractor can run like that .....