I have the small 5hp Briggs & Stratton 4 stroke. I just bought an NGK Iridium plug for it and NGK specifies a .030 gap.
Briggs & Stratton manual says 0.51MM (0.20in).
Do I go with what Briggs says, or NGK? My thought is what Briggs specifies for this motor.
Is the NGK .030 in .in or mm...
