Correct spark plug for BCS735 gasoline ALN330wb

[Actonite]

Apparently, Acme can't figure out the correct spark plug for this machine. Is the Champion L86 or L90 to be used? They seem to be reversed in these two Acme publications. Which is for gasoline and which is for kerosene? The NGK equivalent for the L90 is B5HS or BR5HS, while the equivalent for the L86 is B6HS or BR6HS.

 

[SimS]

I think you would want to run the cooler plug for gas and the hotter one for kerosene. I know that NGK uses lower numbers for hotter plugs. i.e. a B5HS will be hotter than a B6HS, etc

SimS

 

[Actonite]

Thank you. I'll get the BR6HS.