A 90 hp Mercury, serial number 4849632, is a 1978 year model outboard.
A 35 hp Mercury outboard, serial number OC132923, would be a 1990 year model.
The maker points on the 4.5 hp Mercury outboard, are set at 0.020 in.
The plug gap for the 1990 model, 100 hp Mercury outboard is .040 in.
a 75 hp merc goes 19 mph
I have one of these and they were only made between 1965 & 66. Is it a Merc 1100/6 cylinder?
i have a 7.5 merc outboard ser.no.7678203 what jear is it vern o.
The correct spark plug gap for the 1982 model, 9.8 hp Mercury outboard is .040 in.
The serial # would appear to be post 1986 according to Seloc Merc outboard manual I have.
In order to answer this question, the year model of the 90 hp in question, would be required. The range for 2 stroke, 90 Merc's is 265 - 305 lbs., depending on the particular model.
The points gap on a Merc 40 4hp is .020
I have a 1996 merc 15 hp they say 50:1 but I run at 40;1 a little more lube won't hurt it's worked ever year since 96!