Those look good. Running OK? The two-barrel carb doesn't necessarily deliver identical mixture to the two cylinders.
I thought that platinum plugs were standard on them though.
Valve adjustment is important on the Briggs V-twin.
Same problem with my 2003 Husqvarna GTH2248XPC 620 hrs. 22 hp Kawasaki V2
Bad air filter. Just because it looks clean don't make the assumption that it is.
Start with the air filter as their not that expensive, then proceed . Valves, plugs ( make sure that the plugs are not clones). Plenty of info on the web.
Choke open all the way etc.
My problem was a dirty filter.
I previously had a Briggs V-twin similar to yours. Inspected the plugs at probably less than 20 hours, looked like what you show. One dry, one oily.
I cleaned both plugs and swapped sides when reinstalling. Subsequent checks showed both sides dry, no more oily plugs.
Thanks . Just put about $200 into it . Will check them more often since it's over 7 tears old and gets about 2 > 3 acres a week . Did replace the plugs pictured with new CHAMPION from LOWES . Will look at package in barn and post part number .
Have you considered Iridium plugs? I put them in my B&S 22HP V-Twin two or three years ago and haven't looked back. Perhaps I will pull them to have a look. Those horizontal V-Twins have some issues with oil draining back to the sump, and level may have something to do with it.
No for Iridium , will consider . I'm curious to see your used plugs appearance . I think the Champion plugs I installed may be platinum . It has a thinner electrode than those it replaced ( pictured ) .
Pulled the NEW plug from the cylinder that had the oily looking plug . There are only 2 - 2/12 hours of use on the new plug . Seems a little fouled with those few hours . Thoughts ? Reinstalled it and will check monthly .