Just picked up and 1969 7hp Pathfinder Model 1186 (Eska) at a garage sale for $20. Thought it would give me something to do on rainy or HOT days at the cabin. Guy told me its been sitting in the corner for 20 years, but I guess they all say that?? Looks clean, built in gas tank looks new. Looks like an air cooled to me? Does that sound right? I won't spend much time with it until I get it to the lake, but is this thing 2 or 4 Stroke? If 2, anyone got an idea what the mix ratio is? Thanks.