1994 Johnson 30 hp 2-stroke / 2 cylinder spark plugs

[Bannister 6905]

Struggling with replacing the plugs on my 1994 Johnson 30 hp 2-stroke.
I am finding conflicting info as far as correct plug to use (I prefer NGK), plug gap and compatibility with the ignition system.
BZ7HS-10 is currently in the motor, gapped at 0.030"
NGK advises against using "R" plugs, as they may cause problems with the ignition. They call for the "Z" - inductive resistor type - for CDI applications.
Who knows the correct plug to use, what gap?
Thanks in advance.
Bannister

 

[flyingscott]

Champion Ql77jc4 gap is .030. Use champions in an OMC motor they tend to work better than NGKs.

 

[kbait]

Your current NGK's are the correct cross-over and will work fine, so keep 'me for spares..

 

[Bannister 6905]

Thanks to all for the feedback.