The dry weight of an 1990 model, 115 Mercury outboard is 326 lbs.
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50 to 1
50:1
all mercury outboards mix 50:1
1995
Not sure of 1970, but I have a 1983 and it weighs 365 lbs. That's probably pretty close
The 1979 - 1980 model, 115 hp Mercury outboard, requires a 50:1 ratio. One pint of 2 cycle oil, to six gallons of fuel.
For a 2003 115hp 4-stroke Mercury outboard, a marine starting battery with a minimum of 650 CCA (Cold Cranking Amps) is typically recommended. A group size of 24 or 27 is often suitable, but it's important to check the owner's manual for specific recommendations based on your outboard's requirements. Additionally, ensure the battery is designed for marine use to withstand the harsh conditions.
50 to 1
.040
The fuel to oil ratio for a 1977 model, 115 hp Johnson outboard, would be 50:1, roughly one pint of 2 cycle oil, to six gallons of fuel.