Garfish
Member
I have a 1983 Yamaha 70HP BET 2 stroke, 3 cylinder outboard engine. However, I do not the the correct fuel / oil mix ratio. I think it may be 100:1. Can anybody help
please?
please?
Fuel / Oil Ratios
- Thread starter Garfish
- Start date
JasB
Well-Known Member
I can only tell you my Vire 6hp inboard was meant to run on 50:1 (I think) but runs best (when running at all) on 30:1.
A lot richer than yours, but also 20 odd years older.
A lot richer than yours, but also 20 odd years older.
JasB
Well-Known Member
I see your problem now, I had a few minutes spare, so I thought I'd trawl the interwebnet for answers, but it is hard to find any specifics. Obviously your motor does not automix, perhaps an email to Yamaha UK might help?
chippie
Well-Known Member
iboats.com has lots of info on outboards.
100:1 seems to be a ratio that gets twostrokes through US emission legislation.
Some of the sites I have visited suggest50:1 as a better mix for longer engine life.
100:1 seems to be a ratio that gets twostrokes through US emission legislation.
Some of the sites I have visited suggest50:1 as a better mix for longer engine life.
Garfish
Member
Thanks for your help. I think that 50:1 is the way to go.
