1975 air cooled 5HP mariner

[ibnfshn]

Trying to verify oil/gas mixtu

Trying to verify oil/gas mixture. Anyone know for sure?

 

[galamb]

I know that the 3.5/4 horse ai

I know that the 3.5/4 horse air cooled Mariners were 25:1 - would assume this to be true for the 5 horse as well...