What plug and gap do I use?

[ACN]

I don't know the year yet, but I have a 28hp Johnson Sea Horse, Model# RX-11A, SN# 2335394. Someone put split fire plugs in the poor thing, I need to know what kind of plug I should use and what gap.

 

[ob]

Re: What plug and gap do I use?

Use Champion J4C gapped at .030".