It should be 50:1.
50:1 is what I use
more than likely 50 to 1
50 : 1 is the correct fuel mixture
I have a 1999 Mercury 2stroke 5HP outboard and the owners manual states 50:1 Gas/Oil mixture.
It should be marked somewhere on the engine shroud, but if you really don't know and can't get the manual, 40:1 is probably safe.
50:1
I use a 50:1 mixture in my 9.9 Johnson
ratio 50:1
If not using the VRO system, use a ratio of 50:1, roughly one pint of 2 cycle oil, to six gallons of fuel.
humm sound like Johnson 150 hp outboard standard mixing 1Litre tcw 3 2t :50 petrol .more 2 t will not bring much harm to the engine but only slight difficult on craking 1 st craking
Johnson and Evinrude outboards manufactured prior to 1965, require a 24:1 ratio. This ratio works out to 5-6 oz. of 2 cycle oil per gallon of fuel.