Spark plug for 73 evinrude

[Keithwpg]

Hey guys, my bro-in-law just bought a 73 115 hp evinrude. Model 115393m. I've been searching for the right spark plug with no luck. I've learned not to trust what came from the previous owner! Any help appreciated!

 

[F_R]

Champion UL77V. Optional: AC M40FF or Champion QL77JC4. My choice would be the QL77JC4.

 

[Vic.S]

Champion QL77JC4 are what I found. Gapped at 0.030"

iBoats aslo list NGK BZ7HS-10 but they are the equivalnt of QL77JC4

 

[emdsapmgr]

The old OMC's seen to run best on Champions. That's pretty much all Bombardier has ever provided to their dealer network. You'll have good luck with them.