hello, just bought a 2 stroke 15 hp here in mexico. It is model E15D and the manual says to use 50:1 ratio but all Yamaha sites show to use a 100:1 ratio. I can't find an email address for Yamaha and it is impossible to just call them from Mexico. Does anyone know if a brand new E15D has different carbureation from the F15 series? Is the manual wrong or is the company just not advertising its products honestly? I don't want to ruin the engine by using the wrong mixture.
Thanks for any help.
You are only ment to use a 1:50 ratio for the first 10 hours whilst running the engine in. There after the ratio is 1:100 using any good outboard 2 stroke oil. Using a 1:50 continuosly will carbon the engine up and give you endless problems with oiled up spark plugs.
the E15d is an 05 or newer Enduro15. its not avalible in the US and hasnt been for maybe 20 years.
its built with slightly different specifications than the US 2 stroke 15. the F15 is a four stroke,totally different animal.
oils outside the US are very different, here in Venezuela,hence the rodbolt1.0, the TCW3 oil here is very very thin and has almost no amonia smell. even the yamalube is thinner here than the US.
JB is quite right about OMC and the fact that 50to1 wont create a carbon issue. if the cooling and fuel is kept in new condition and the engine wont sit idle for more than 2 weeks 100 to 1 may work ok. however fuels and lubricants are vastly different outside the US and the safety margin at 100 to 1 gets a bit slim.
myself I would stick with the 50 to 1.