Oil/Petrol Mixture Ratio for 9.9hp outboard 2 stroke?
Answers:
most ob 2strokes are 25:1 but might take a look down on the fin by the prop. some times the manufacture puts the mixtuer on a decal there
25:1
Depends how old it is.
If it is brand new then the ratio is 25:1 for the first 10 hours.
After the first 10 hours the ratio goes up to 100:1
figures are from a yamaha manual
Usually 40:1 or 50:1, some of the newer engines allow 100:1 and some older ones may require 25:1.
Temperature matters as well. Many 2-cycle engines will require more oil at lower temps.
How old is the motor? What manufacturer?
If you can't even list the Brand or the Year model #
We have a saying on this side of the pond.
Fo git 'bout it. You silly bloke
50-1
The answers post by the user, for information only, UKQnA.com does not guarantee the right.