Spark Plugs & Gap

[FreeBeeTony]

I believe I have the correct plugs for my Twin '95 Johnson 175's: QL78yc.
However I have seen recommended gaps ranging from 0.030 - 0.040"....
What is the correct gap???

 

[Faztbullet]

Correct gap is .030.....

 

[FreeBeeTony]

Thanks!