Current Mercury 2 Stroke 90 HP motors use NGK BUZHW-2 plugs. This is a resistor plug to reduce static interference in the radio. The non-resistor (Lower cost option) is NGK BUHW-2. The difference is about $2/plug
hp
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 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
The 1990 model, 90 hp Evinrude outboard can use either an NGK BR7HS, or Champion L77JC4.