some say .30 and some say .40 so I would try .35 bet that works
The correct air gap is .032 in.
The recommended gap setting is .032 in. Open or close the ground electrode to aquire this clearance, as measured with a feeler gage.
The Spark Plug Gap.028 (In thousandths of an inch)
The 1990 model, 90 hp Evinrude outboard can use either an NGK BR7HS, or Champion L77JC4.
.43
1982-87 yz 490 - ngk br8es - 0.024 " , 1988-90 yz490 - 0.032 "
what is the plug gap on a 90 hp yamaha 2 stroke engine?
There are none. I believe they use a perma gap plug.
.35
I have an early 90's 2cyl, 8hp, 2-stroke and the gap is .040.
349lbs
0.028 geo tracker 1990, 8 valves 2 doors