with the newer semi/synthetic oils mix at about 32:1 to 40:1 anywhere between these two is a safe ratio.
what is the oil gas mixture for a ysr50
50:1
20:1
32:1 gas to oil mixture
The gas oil mixture for that sled is 24:1 according to the tag on my 79 srx.
The fuel mixture for a Yamaha 40 hp 2 stroke outboard engine is 50:1, gas, oil mixture. You should use new gas when you get the engine ready for the season.
the mixture is 50:1 I would use synthetic oil
the safest mixture would be 32 to 1
40 to 50:1 with Yamalube
Yamaha kodiak 400 starts then when u put it into gear and drive after a minite it reves up and stalls
50:1
It is best to just do it your self trust me,but 32.1