The dry weight of an 1990 model, 115 Mercury outboard is 326 lbs.
50:1
319 pounds
The dry weight of a 1988 model, 115 hp Mercury outboard is 312 lbs.
The 1978 model, 115 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
360 pounds
320 Lbs
125 lb
95 hp
1 quart of outboard / 2 cycle motor oil to 6 gallons of gas
If not using oil injection, the 115 hp Yamaha outboard will require a 50:1 ratio.
does the lower unit need to be removed to replace the water pump on a 1995 Johnson 115 hp outboard engine