I have mine running at 30:1 it runs great with no oil injection system anymore
Oil fuel ratio for z 1983 Yamaha IT should be listed on the oil bottle. The most common ratio is 50:1.
I have a 1983 IT175 Yamaha and the fuel mix is recommended by Yamaha at 28 to 32: 1 I use 30:1 ratio. Hope this helps
Fuel mixture ratio for Yamaha rt100?
The reason eight Yamaha golf cart may backfire when slowing down, is the air to fuel mixture needs adjustment. The golf cart is getting too much. Fuel.
Check with dealer
32.1
32:1 yamalube
Most all models of Yamaha outboards can be operated on a 50:1 fuel to oil ratio.
Mixing ratio should be 50:1
the oil fuel ratio is 32 to 1 you should not change ratio even if you do enginge mods keep it the same
32:1
About 36 to 1 or 40 to 1