SPARK PLUG L4J N/A what do I use insted ?

[kodibass]

I have a old 40 hp 40LR 75-C the manual calls for L4j plugs but I think this number has been replaced / upgraded to some other # now. anyone know what I should be running it this fine 38 years young motor? thanks

 

[HighTrim]

Re: SPARK PLUG L4J N/A what do I use insted ?

L82C is its replacement