plugs for a 25hp mercury

[piggy]

I have a 25hp mercury s/n OB222690. Would this be a 1987? What spark plug is correct for this motor? Where can I find a chart for outboard spark plugs? Thanks for any help.

 

[corm]

Re: plugs for a 25hp mercury

Hi,

BP8H-N-10 .040 gap
http://www.ngksparkplugs.com/part_finder/watercraft/step3.asp