89 Yamaha 225 Excel fuel ratio

[MaineFishin]

Folks, the rapair manual states the ratio is 100:1, I have always used 50:1 in all previous engines. I thought I could double check here but nothing is concise, what is correct?

 

[MaineFishin]

Re: 89 Yamaha 225 Excel fuel ratio

Spoke with a dealer / repair shop, they stated the 100 :1 is correct but it does not leave a lot of lubrication in the engine. They stated some of heir clients run at 50:1 while others split the difference at 75:1. I topped off the tank with 70 gal and mixed at 50:1, ran great for 4 hours. I will mix near the 50:1 ratio going forward.