The 1999 model, 90 hp Mercury outboard requires an NGK BUHW-2 spark plug, standard plug wires are acceptable.
A 90 hp Mercury outboard, serial number OG242239, would be a 1995 year model.
I have an early 90's 2cyl, 8hp, 2-stroke and the gap is .040.
What is the weight of a 90 blue band mercury
A 90 hp Mercury outboard, serial number OD067645, would be a 1991 year model.
The 3 cylinder model Mercury 90, uses a NGK BUHW-2, or Champion L78V. The 6 cylinder model, takes a NGK BUHW, or a Champion L76V.
The spark plug gap for a 90 hp 2-cycle Mercury outboard typically ranges from 0.030 to 0.040 inches (0.76 to 1.02 mm). However, it's always best to consult the specific owner's manual or service manual for your model to ensure the correct gap, as it can vary slightly depending on the year and specific model.
The recommended gap setting is .032 in. Open or close the ground electrode to aquire this clearance, as measured with a feeler gage.
A 90 hp Mercury, serial number 4849632, is a 1978 year model outboard.
A 90hp Mercury outboard, serial number 6114748 is a 1982 year model.
137 kg ??
.35